diff --git a/code/__DEFINES/subsystems.dm b/code/__DEFINES/subsystems.dm
index 4f3354381df..9998aedbbfd 100644
--- a/code/__DEFINES/subsystems.dm
+++ b/code/__DEFINES/subsystems.dm
@@ -104,6 +104,25 @@
 	}\
 }
 
+//! ### SS initialization hints
+/**
+ * Negative values incidate a failure or warning of some kind, positive are good.
+ * 0 and 1 are unused so that TRUE and FALSE are guarenteed to be invalid values.
+ */
+
+/// Subsystem failed to initialize entirely. Print a warning, log, and disable firing.
+#define SS_INIT_FAILURE -2
+
+/// The default return value which must be overriden. Will succeed with a warning.
+#define SS_INIT_NONE -1
+
+/// Subsystem initialized sucessfully.
+#define SS_INIT_SUCCESS 2
+
+/// Successful, but don't print anything. Useful if subsystem was disabled.
+#define SS_INIT_NO_NEED 3
+
+//! ### SS initialization load orders
 // Subsystem init_order, from highest priority to lowest priority
 // Subsystems shutdown in the reverse of the order they initialize in
 // The numbers just define the ordering, they are meaningless otherwise.
diff --git a/code/controllers/master.dm b/code/controllers/master.dm
index 73106ccb239..2328401e9be 100644
--- a/code/controllers/master.dm
+++ b/code/controllers/master.dm
@@ -238,12 +238,7 @@ GLOBAL_REAL(Master, /datum/controller/master) = new
 
 		// Initialize subsystems.
 		for (var/datum/controller/subsystem/subsystem in stage_sorted_subsystems[current_init_stage])
-			if (subsystem.flags & SS_NO_INIT || subsystem.initialized) //Don't init SSs with the corresponding flag or if they already are initialized
-				continue
-			current_initializing_subsystem = subsystem
-
-			rustg_time_reset(SS_INIT_TIMER_KEY)
-			subsystem.Initialize()
+			init_subsystem(subsystem)
 
 			CHECK_TICK
 		current_initializing_subsystem = null
@@ -279,6 +274,78 @@ GLOBAL_REAL(Master, /datum/controller/master) = new
 		world.sleep_offline = FALSE
 	initializations_finished_with_no_players_logged_in = initialized_tod < REALTIMEOFDAY - 10
 
+/**
+ * Initialize a given subsystem and handle the results.
+ *
+ * Arguments:
+ * * subsystem - the subsystem to initialize.
+ */
+/datum/controller/master/proc/init_subsystem(datum/controller/subsystem/subsystem)
+	var/static/list/valid_results = list(
+		SS_INIT_FAILURE,
+		SS_INIT_NONE,
+		SS_INIT_SUCCESS,
+		SS_INIT_NO_NEED,
+	)
+
+	if (subsystem.flags & SS_NO_INIT || subsystem.initialized) //Don't init SSs with the corresponding flag or if they already are initialized
+		return
+
+	current_initializing_subsystem = subsystem
+	rustg_time_reset(SS_INIT_TIMER_KEY)
+
+	var/result = subsystem.Initialize()
+
+	// Capture end time
+	var/time = rustg_time_milliseconds(SS_INIT_TIMER_KEY)
+	var/seconds = round(time / 1000, 0.01)
+
+	// Always update the blackbox tally regardless.
+	SSblackbox.record_feedback("tally", "subsystem_initialize", time, subsystem.name)
+
+	// Gave invalid return value.
+	if(result && !(result in valid_results))
+		warning("[subsystem.name] subsystem initialized, returning invalid result [result]. This is a bug.")
+
+	// just returned ..() or didn't implement Initialize() at all
+	if(result == SS_INIT_NONE)
+		warning("[subsystem.name] subsystem does not implement Initialize() or it returns ..(). If the former is true, the SS_NO_INIT flag should be set for this subsystem.")
+
+	if(result != SS_INIT_FAILURE)
+		// Some form of success, implicit failure, or the SS in unused.
+		subsystem.initialized = TRUE
+
+		SEND_SIGNAL(subsystem, COMSIG_SUBSYSTEM_POST_INITIALIZE)
+	else
+		// The subsystem officially reports that it failed to init and wishes to be treated as such.
+		subsystem.initialized = FALSE
+		subsystem.can_fire = FALSE
+
+	// The rest of this proc is printing the world log and chat message.
+	var/message_prefix
+
+	// If true, print the chat message with boldwarning text.
+	var/chat_warning = FALSE
+
+	switch(result)
+		if(SS_INIT_FAILURE)
+			message_prefix = "Failed to initialize [subsystem.name] subsystem after"
+			chat_warning = TRUE
+		if(SS_INIT_SUCCESS)
+			message_prefix = "Initialized [subsystem.name] subsystem within"
+		if(SS_INIT_NO_NEED)
+			// This SS is disabled or is otherwise shy.
+			return
+		else
+			// SS_INIT_NONE or an invalid value.
+			message_prefix = "Initialized [subsystem.name] subsystem with errors within"
+			chat_warning = TRUE
+
+	var/message = "[message_prefix] [seconds] second[seconds == 1 ? "" : "s"]!"
+	var/chat_message = chat_warning ? span_boldwarning(message) : span_boldannounce(message)
+
+	to_chat(world, chat_message)
+	log_world(message)
 
 /datum/controller/master/proc/SetRunLevel(new_runlevel)
 	var/old_runlevel = current_runlevel
diff --git a/code/controllers/subsystem.dm b/code/controllers/subsystem.dm
index b2df00d5852..41747e5eac0 100644
--- a/code/controllers/subsystem.dm
+++ b/code/controllers/subsystem.dm
@@ -254,19 +254,11 @@
 /// Called after the config has been loaded or reloaded.
 /datum/controller/subsystem/proc/OnConfigLoad()
 
-//used to initialize the subsystem AFTER the map has loaded
+/**
+ * Used to initialize the subsystem. This is expected to be overriden by subtypes.
+ */
 /datum/controller/subsystem/Initialize()
-	initialized = TRUE
-	SEND_SIGNAL(src, COMSIG_SUBSYSTEM_POST_INITIALIZE)
-
-	var/time = rustg_time_milliseconds(SS_INIT_TIMER_KEY)
-	var/seconds = round(time / 1000, 0.01)
-
-	var/msg = "Initialized [name] subsystem within [seconds] second[seconds == 1 ? "" : "s"]!"
-	to_chat(world, span_boldannounce("[msg]"))
-	log_world(msg)
-	SSblackbox.record_feedback("tally", "subsystem_initialize", time, name)
-	return seconds
+	return SS_INIT_NONE
 
 /datum/controller/subsystem/stat_entry(msg)
 	if(can_fire && !(SS_NO_FIRE & flags) && init_stage <= Master.init_stage_completed)
diff --git a/code/controllers/subsystem/achievements.dm b/code/controllers/subsystem/achievements.dm
index f0e10e6f039..58fcb3efb73 100644
--- a/code/controllers/subsystem/achievements.dm
+++ b/code/controllers/subsystem/achievements.dm
@@ -11,9 +11,9 @@ SUBSYSTEM_DEF(achievements)
 	///List of all awards
 	var/list/datum/award/awards = list()
 
-/datum/controller/subsystem/achievements/Initialize(timeofday)
+/datum/controller/subsystem/achievements/Initialize()
 	if(!SSdbcore.Connect())
-		return ..()
+		return SS_INIT_NO_NEED
 	achievements_enabled = TRUE
 
 	for(var/T in subtypesof(/datum/award/achievement))
@@ -33,7 +33,7 @@ SUBSYSTEM_DEF(achievements)
 		if(!C.player_details.achievements.initialized)
 			C.player_details.achievements.InitializeData()
 
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/achievements/Shutdown()
 	save_achievements_to_db()
diff --git a/code/controllers/subsystem/addiction.dm b/code/controllers/subsystem/addiction.dm
index 39caf101b8e..13719edaad8 100644
--- a/code/controllers/subsystem/addiction.dm
+++ b/code/controllers/subsystem/addiction.dm
@@ -8,9 +8,9 @@ SUBSYSTEM_DEF(addiction)
 	///Dictionary of addiction.type || addiction ref
 	var/list/all_addictions = list()
 
-/datum/controller/subsystem/addiction/Initialize(timeofday)
+/datum/controller/subsystem/addiction/Initialize()
 	InitializeAddictions()
-	return ..()
+	return SS_INIT_SUCCESS
 
 ///Ran on initialize, populates the addiction dictionary
 /datum/controller/subsystem/addiction/proc/InitializeAddictions()
diff --git a/code/controllers/subsystem/ai_controllers.dm b/code/controllers/subsystem/ai_controllers.dm
index 5319d7316fb..82c22869e32 100644
--- a/code/controllers/subsystem/ai_controllers.dm
+++ b/code/controllers/subsystem/ai_controllers.dm
@@ -12,9 +12,9 @@ SUBSYSTEM_DEF(ai_controllers)
 	///List of all ai controllers currently running
 	var/list/active_ai_controllers = list()
 
-/datum/controller/subsystem/ai_controllers/Initialize(timeofday)
+/datum/controller/subsystem/ai_controllers/Initialize()
 	setup_subtrees()
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/ai_controllers/proc/setup_subtrees()
 	ai_subtrees = list()
diff --git a/code/controllers/subsystem/air.dm b/code/controllers/subsystem/air.dm
index 3cc8eba83a4..d975e431088 100644
--- a/code/controllers/subsystem/air.dm
+++ b/code/controllers/subsystem/air.dm
@@ -87,7 +87,7 @@ SUBSYSTEM_DEF(air)
 	return ..()
 
 
-/datum/controller/subsystem/air/Initialize(timeofday)
+/datum/controller/subsystem/air/Initialize()
 	map_loading = FALSE
 	gas_reactions = init_gas_reactions()
 	hotspot_reactions = init_hotspot_reactions()
@@ -98,7 +98,7 @@ SUBSYSTEM_DEF(air)
 	setup_turf_visuals()
 	process_adjacent_rebuild()
 	atmos_handbooks_init()
-	return ..()
+	return SS_INIT_SUCCESS
 
 
 /datum/controller/subsystem/air/fire(resumed = FALSE)
diff --git a/code/controllers/subsystem/assets.dm b/code/controllers/subsystem/assets.dm
index 72a9c59cb8d..8336c60c0fa 100644
--- a/code/controllers/subsystem/assets.dm
+++ b/code/controllers/subsystem/assets.dm
@@ -22,7 +22,7 @@ SUBSYSTEM_DEF(assets)
 
 
 
-/datum/controller/subsystem/assets/Initialize(timeofday)
+/datum/controller/subsystem/assets/Initialize()
 	for(var/type in typesof(/datum/asset))
 		var/datum/asset/A = type
 		if (type != initial(A._abstract))
@@ -30,7 +30,7 @@ SUBSYSTEM_DEF(assets)
 
 	transport.Initialize(cache)
 
-	..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/assets/Recover()
 	cache = SSassets.cache
diff --git a/code/controllers/subsystem/atoms.dm b/code/controllers/subsystem/atoms.dm
index 574c064f98f..473327e4b94 100644
--- a/code/controllers/subsystem/atoms.dm
+++ b/code/controllers/subsystem/atoms.dm
@@ -28,7 +28,7 @@ SUBSYSTEM_DEF(atoms)
 
 	initialized = INITIALIZATION_INSSATOMS
 
-/datum/controller/subsystem/atoms/Initialize(timeofday)
+/datum/controller/subsystem/atoms/Initialize()
 	GLOB.fire_overlay.appearance_flags = RESET_COLOR
 	setupGenetics() //to set the mutations' sequence
 
@@ -36,7 +36,7 @@ SUBSYSTEM_DEF(atoms)
 	InitializeAtoms()
 	initialized = INITIALIZATION_INNEW_REGULAR
 
-	return ..()
+	return SS_INIT_SUCCESS
 
 #ifdef PROFILE_MAPLOAD_INIT_ATOM
 #define PROFILE_INIT_ATOM_BEGIN(...) var/__profile_stat_time = TICK_USAGE
diff --git a/code/controllers/subsystem/ban_cache.dm b/code/controllers/subsystem/ban_cache.dm
index 523af2ef281..2d10baecab3 100644
--- a/code/controllers/subsystem/ban_cache.dm
+++ b/code/controllers/subsystem/ban_cache.dm
@@ -8,9 +8,9 @@ SUBSYSTEM_DEF(ban_cache)
 	flags = SS_NO_FIRE
 	var/query_started = FALSE
 
-/datum/controller/subsystem/ban_cache/Initialize(start_timeofday)
+/datum/controller/subsystem/ban_cache/Initialize()
 	generate_queries()
-	return ..()
+	return SS_INIT_SUCCESS
 
 /// Generates ban caches for any logged in clients. This ensures the amount of in-series ban checking we have to do that actually involves sleeps is VERY low
 /datum/controller/subsystem/ban_cache/proc/generate_queries()
diff --git a/code/controllers/subsystem/blackbox.dm b/code/controllers/subsystem/blackbox.dm
index 5b6b763ad48..1c81a7895bc 100644
--- a/code/controllers/subsystem/blackbox.dm
+++ b/code/controllers/subsystem/blackbox.dm
@@ -23,7 +23,7 @@ SUBSYSTEM_DEF(blackbox)
 	record_feedback("amount", "dm_build", DM_BUILD)
 	record_feedback("amount", "byond_version", world.byond_version)
 	record_feedback("amount", "byond_build", world.byond_build)
-	. = ..()
+	return SS_INIT_SUCCESS
 
 //poll population
 /datum/controller/subsystem/blackbox/fire()
diff --git a/code/controllers/subsystem/blackmarket.dm b/code/controllers/subsystem/blackmarket.dm
index 4899aed8b4f..764b3a65409 100644
--- a/code/controllers/subsystem/blackmarket.dm
+++ b/code/controllers/subsystem/blackmarket.dm
@@ -17,7 +17,7 @@ SUBSYSTEM_DEF(blackmarket)
 	/// Currently queued purchases.
 	var/list/queued_purchases = list()
 
-/datum/controller/subsystem/blackmarket/Initialize(timeofday)
+/datum/controller/subsystem/blackmarket/Initialize()
 	for(var/market in subtypesof(/datum/market))
 		markets[market] += new market
 
@@ -32,7 +32,7 @@ SUBSYSTEM_DEF(blackmarket)
 				continue
 			markets[M].add_item(item)
 		qdel(I)
-	. = ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/blackmarket/fire(resumed)
 	while(length(queued_purchases))
diff --git a/code/controllers/subsystem/chat.dm b/code/controllers/subsystem/chat.dm
index 0e4f8ecad2c..ddcdf867413 100644
--- a/code/controllers/subsystem/chat.dm
+++ b/code/controllers/subsystem/chat.dm
@@ -12,6 +12,11 @@ SUBSYSTEM_DEF(chat)
 
 	var/list/payload_by_client = list()
 
+/datum/controller/subsystem/chat/Initialize()
+	// Just used by chat system to know that initialization is nearly finished.
+	// The to_chat checks could probably check the runlevel instead, but would require testing.
+	return SS_INIT_SUCCESS
+
 /datum/controller/subsystem/chat/fire()
 	for(var/key in payload_by_client)
 		var/client/client = key
diff --git a/code/controllers/subsystem/circuit_component.dm b/code/controllers/subsystem/circuit_component.dm
index 544f141e65e..ceea6b7e44e 100644
--- a/code/controllers/subsystem/circuit_component.dm
+++ b/code/controllers/subsystem/circuit_component.dm
@@ -2,6 +2,7 @@ SUBSYSTEM_DEF(circuit_component)
 	name = "Circuit Components"
 	wait = 0.1 SECONDS
 	priority = FIRE_PRIORITY_DEFAULT
+	flags = SS_NO_INIT
 
 	var/list/callbacks_to_invoke = list()
 	var/list/currentrun = list()
diff --git a/code/controllers/subsystem/dbcore.dm b/code/controllers/subsystem/dbcore.dm
index c5747d82e17..88208403f74 100644
--- a/code/controllers/subsystem/dbcore.dm
+++ b/code/controllers/subsystem/dbcore.dm
@@ -49,7 +49,7 @@ SUBSYSTEM_DEF(dbcore)
 		if(2)
 			message_admins("Could not get schema version from database")
 
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/dbcore/stat_entry(msg)
 	msg = "P:[length(all_queries)]|Active:[length(queries_active)]|Standby:[length(queries_standby)]"
@@ -338,7 +338,7 @@ SUBSYSTEM_DEF(dbcore)
 			queries -= query
 			stack_trace("Invalid query passed to QuerySelect: `[query]` [REF(query)]")
 			continue
-		
+
 		if (warn)
 			INVOKE_ASYNC(query, /datum/db_query.proc/warn_execute)
 		else
diff --git a/code/controllers/subsystem/discord.dm b/code/controllers/subsystem/discord.dm
index 90b978171c7..56345846dde 100644
--- a/code/controllers/subsystem/discord.dm
+++ b/code/controllers/subsystem/discord.dm
@@ -52,7 +52,7 @@ SUBSYSTEM_DEF(discord)
 	/// Is TGS enabled (If not we won't fire because otherwise this is useless)
 	var/enabled = FALSE
 
-/datum/controller/subsystem/discord/Initialize(start_timeofday)
+/datum/controller/subsystem/discord/Initialize()
 	common_words = world.file2list("strings/1000_most_common.txt")
 	reverify_cache = list()
 	// Check for if we are using TGS, otherwise return and disables firing
@@ -60,7 +60,7 @@ SUBSYSTEM_DEF(discord)
 		enabled = TRUE // Allows other procs to use this (Account linking, etc)
 	else
 		can_fire = FALSE // We dont want excess firing
-		return ..() // Cancel
+		return SS_INIT_NO_NEED
 
 	try
 		people_to_notify = json_decode(file2text(notify_file))
@@ -71,7 +71,7 @@ SUBSYSTEM_DEF(discord)
 		notifymsg += ", a new round is starting!"
 		send2chat(trim(notifymsg), CONFIG_GET(string/chat_new_game_notifications)) // Sends the message to the discord, using same config option as the roundstart notification
 	fdel(notify_file) // Deletes the file
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/discord/fire()
 	if(!enabled)
diff --git a/code/controllers/subsystem/disease.dm b/code/controllers/subsystem/disease.dm
index 4fe5533e161..bfa6fd66b7d 100644
--- a/code/controllers/subsystem/disease.dm
+++ b/code/controllers/subsystem/disease.dm
@@ -12,12 +12,12 @@ SUBSYSTEM_DEF(disease)
 	if(!diseases)
 		diseases = subtypesof(/datum/disease)
 
-/datum/controller/subsystem/disease/Initialize(timeofday)
+/datum/controller/subsystem/disease/Initialize()
 	var/list/all_common_diseases = diseases - typesof(/datum/disease/advance)
 	for(var/common_disease_type in all_common_diseases)
 		var/datum/disease/prototype = new common_disease_type()
 		archive_diseases[prototype.GetDiseaseID()] = prototype
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/disease/stat_entry(msg)
 	msg = "P:[length(active_diseases)]"
diff --git a/code/controllers/subsystem/early_assets.dm b/code/controllers/subsystem/early_assets.dm
index 8c2b975a9a8..5ce669bec83 100644
--- a/code/controllers/subsystem/early_assets.dm
+++ b/code/controllers/subsystem/early_assets.dm
@@ -8,7 +8,7 @@ SUBSYSTEM_DEF(early_assets)
 	init_order = INIT_ORDER_EARLY_ASSETS
 	flags = SS_NO_FIRE
 
-/datum/controller/subsystem/early_assets/Initialize(start_timeofday)
+/datum/controller/subsystem/early_assets/Initialize()
 	for (var/datum/asset/asset_type as anything in subtypesof(/datum/asset))
 		if (initial(asset_type._abstract) == asset_type)
 			continue
@@ -21,4 +21,4 @@ SUBSYSTEM_DEF(early_assets)
 
 		CHECK_TICK
 
-	return ..()
+	return SS_INIT_SUCCESS
diff --git a/code/controllers/subsystem/economy.dm b/code/controllers/subsystem/economy.dm
index d069efe7a86..27a09a1c576 100644
--- a/code/controllers/subsystem/economy.dm
+++ b/code/controllers/subsystem/economy.dm
@@ -69,7 +69,7 @@ SUBSYSTEM_DEF(economy)
 	/// We need this on the subsystem because of yielding and such
 	var/temporary_total = 0
 
-/datum/controller/subsystem/economy/Initialize(timeofday)
+/datum/controller/subsystem/economy/Initialize()
 	//removes cargo from the split
 	var/budget_to_hand_out = round(budget_pool / department_accounts.len -1)
 	if(time2text(world.timeofday, "DDD") == SUNDAY)
@@ -79,7 +79,7 @@ SUBSYSTEM_DEF(economy)
 			new /datum/bank_account/department(dep_id, 0, player_account = FALSE)
 			continue
 		new /datum/bank_account/department(dep_id, budget_to_hand_out, player_account = FALSE)
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/economy/Recover()
 	generated_accounts = SSeconomy.generated_accounts
diff --git a/code/controllers/subsystem/events.dm b/code/controllers/subsystem/events.dm
index 32c8ef97b14..6ec2ef1f17d 100644
--- a/code/controllers/subsystem/events.dm
+++ b/code/controllers/subsystem/events.dm
@@ -14,7 +14,7 @@ SUBSYSTEM_DEF(events)
 	var/list/holidays //List of all holidays occuring today or null if no holidays
 	var/wizardmode = FALSE
 
-/datum/controller/subsystem/events/Initialize(time, zlevel)
+/datum/controller/subsystem/events/Initialize()
 	for(var/type in typesof(/datum/round_event_control))
 		var/datum/round_event_control/E = new type()
 		if(!E.typepath)
@@ -22,7 +22,7 @@ SUBSYSTEM_DEF(events)
 		control += E //add it to the list of all events (controls)
 	reschedule()
 	getHoliday()
-	return ..()
+	return SS_INIT_SUCCESS
 
 
 /datum/controller/subsystem/events/fire(resumed = FALSE)
diff --git a/code/controllers/subsystem/fluids.dm b/code/controllers/subsystem/fluids.dm
index cc77430b7d2..4a06cb59c35 100644
--- a/code/controllers/subsystem/fluids.dm
+++ b/code/controllers/subsystem/fluids.dm
@@ -51,11 +51,11 @@ SUBSYSTEM_DEF(fluids)
 	/// Whether the subsystem has resumed processing fluid effects.
 	var/resumed_effect_processing
 
-/datum/controller/subsystem/fluids/Initialize(start_timeofday)
+/datum/controller/subsystem/fluids/Initialize()
 	initialize_waits()
 	initialize_spread_carousel()
 	initialize_effect_carousel()
-	return ..()
+	return SS_INIT_SUCCESS
 
 /**
  * Initializes the subsystem waits.
diff --git a/code/controllers/subsystem/icon_smooth.dm b/code/controllers/subsystem/icon_smooth.dm
index 4960614c3f4..f53d945c422 100644
--- a/code/controllers/subsystem/icon_smooth.dm
+++ b/code/controllers/subsystem/icon_smooth.dm
@@ -55,7 +55,7 @@ SUBSYSTEM_DEF(icon_smooth)
 		var/turf/item_loc = movable_item.loc
 		item_loc.add_blueprints(movable_item)
 
-	return ..()
+	return SS_INIT_SUCCESS
 
 
 /datum/controller/subsystem/icon_smooth/proc/add_to_queue(atom/thing)
diff --git a/code/controllers/subsystem/id_access.dm b/code/controllers/subsystem/id_access.dm
index a125cbe7f8d..bf2e35c56c2 100644
--- a/code/controllers/subsystem/id_access.dm
+++ b/code/controllers/subsystem/id_access.dm
@@ -36,7 +36,7 @@ SUBSYSTEM_DEF(id_access)
 	/// The roundstart generated code for the spare ID safe. This is given to the Captain on shift start. If there's no Captain, it's given to the HoP. If there's no HoP
 	var/spare_id_safe_code = ""
 
-/datum/controller/subsystem/id_access/Initialize(timeofday)
+/datum/controller/subsystem/id_access/Initialize()
 	// We use this because creating the trim singletons requires the config to be loaded.
 	setup_access_flags()
 	setup_region_lists()
@@ -47,7 +47,7 @@ SUBSYSTEM_DEF(id_access)
 
 	spare_id_safe_code = "[rand(0,9)][rand(0,9)][rand(0,9)][rand(0,9)][rand(0,9)]"
 
-	return ..()
+	return SS_INIT_SUCCESS
 
 /**
  * Called by [/datum/controller/subsystem/ticker/proc/setup]
diff --git a/code/controllers/subsystem/init_profiler.dm b/code/controllers/subsystem/init_profiler.dm
index b992652005a..e7586c93a95 100644
--- a/code/controllers/subsystem/init_profiler.dm
+++ b/code/controllers/subsystem/init_profiler.dm
@@ -11,7 +11,7 @@ SUBSYSTEM_DEF(init_profiler)
 /datum/controller/subsystem/init_profiler/Initialize()
 	if(CONFIG_GET(flag/auto_profile))
 		write_init_profile()
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/init_profiler/proc/write_init_profile()
 	var/current_profile_data = world.Profile(PROFILE_REFRESH, format = "json")
diff --git a/code/controllers/subsystem/input.dm b/code/controllers/subsystem/input.dm
index 35930860b7f..57fe56c96aa 100644
--- a/code/controllers/subsystem/input.dm
+++ b/code/controllers/subsystem/input.dm
@@ -29,7 +29,7 @@ VERB_MANAGER_SUBSYSTEM_DEF(input)
 
 	refresh_client_macro_sets()
 
-	return ..()
+	return SS_INIT_SUCCESS
 
 // This is for when macro sets are eventualy datumized
 /datum/controller/subsystem/verb_manager/input/proc/setup_default_macro_sets()
diff --git a/code/controllers/subsystem/ipintel.dm b/code/controllers/subsystem/ipintel.dm
index fb0ddead09a..83cbbc4c27e 100644
--- a/code/controllers/subsystem/ipintel.dm
+++ b/code/controllers/subsystem/ipintel.dm
@@ -8,7 +8,6 @@ SUBSYSTEM_DEF(ipintel)
 
 	var/list/cache = list()
 
-/datum/controller/subsystem/ipintel/Initialize(timeofday, zlevel)
+/datum/controller/subsystem/ipintel/Initialize()
 	enabled = TRUE
-	. = ..()
-
+	return SS_INIT_SUCCESS
diff --git a/code/controllers/subsystem/job.dm b/code/controllers/subsystem/job.dm
index ea846ea0936..1f0e605564e 100644
--- a/code/controllers/subsystem/job.dm
+++ b/code/controllers/subsystem/job.dm
@@ -62,14 +62,14 @@ SUBSYSTEM_DEF(job)
 	/// Dictionary that maps job priorities to low/medium/high. Keys have to be number-strings as assoc lists cannot be indexed by integers. Set in setup_job_lists.
 	var/list/job_priorities_to_strings
 
-/datum/controller/subsystem/job/Initialize(timeofday)
+/datum/controller/subsystem/job/Initialize()
 	setup_job_lists()
 	if(!length(all_occupations))
 		SetupOccupations()
 	if(CONFIG_GET(flag/load_jobs_from_txt))
 		LoadJobs()
 	set_overflow_role(CONFIG_GET(string/overflow_job))
-	return ..()
+	return SS_INIT_SUCCESS
 
 
 /datum/controller/subsystem/job/proc/set_overflow_role(new_overflow_role)
diff --git a/code/controllers/subsystem/lag_switch.dm b/code/controllers/subsystem/lag_switch.dm
index 0c3780750ea..82e1ba68088 100644
--- a/code/controllers/subsystem/lag_switch.dm
+++ b/code/controllers/subsystem/lag_switch.dm
@@ -16,7 +16,7 @@ SUBSYSTEM_DEF(lag_switch)
 	/// Cooldown between say verb uses when slowmode is enabled
 	var/slowmode_cooldown = 3 SECONDS
 
-/datum/controller/subsystem/lag_switch/Initialize(start_timeofday)
+/datum/controller/subsystem/lag_switch/Initialize()
 	for(var/i in 1 to measures.len)
 		measures[i] = FALSE
 	var/auto_switch_pop = CONFIG_GET(number/auto_lag_switch_pop)
@@ -24,7 +24,7 @@ SUBSYSTEM_DEF(lag_switch)
 		auto_switch = TRUE
 		trigger_pop = auto_switch_pop
 		RegisterSignal(SSdcs, COMSIG_GLOB_CLIENT_CONNECT, .proc/client_connected)
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/lag_switch/proc/client_connected(datum/source, client/connected)
 	SIGNAL_HANDLER
diff --git a/code/controllers/subsystem/language.dm b/code/controllers/subsystem/language.dm
index e80a7096d8c..c13711db364 100644
--- a/code/controllers/subsystem/language.dm
+++ b/code/controllers/subsystem/language.dm
@@ -3,7 +3,7 @@ SUBSYSTEM_DEF(language)
 	init_order = INIT_ORDER_LANGUAGE
 	flags = SS_NO_FIRE
 
-/datum/controller/subsystem/language/Initialize(timeofday)
+/datum/controller/subsystem/language/Initialize()
 	for(var/L in subtypesof(/datum/language))
 		var/datum/language/language = L
 		if(!initial(language.key))
@@ -15,4 +15,4 @@ SUBSYSTEM_DEF(language)
 
 		GLOB.language_datum_instances[language] = instance
 
-	return ..()
+	return SS_INIT_SUCCESS
diff --git a/code/controllers/subsystem/library.dm b/code/controllers/subsystem/library.dm
index b882422b41e..3f6a04a3f02 100644
--- a/code/controllers/subsystem/library.dm
+++ b/code/controllers/subsystem/library.dm
@@ -19,10 +19,10 @@ SUBSYSTEM_DEF(library)
 	var/list/library_areas = list()
 
 /datum/controller/subsystem/library/Initialize()
-	. = ..()
 	prepare_official_posters()
 	prepare_library_areas()
 	load_shelves()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/library/proc/load_shelves()
 	for(var/obj/structure/bookcase/case_to_load as anything in shelves_to_load)
diff --git a/code/controllers/subsystem/lighting.dm b/code/controllers/subsystem/lighting.dm
index 378a849dfa1..1c4884b3b06 100644
--- a/code/controllers/subsystem/lighting.dm
+++ b/code/controllers/subsystem/lighting.dm
@@ -16,14 +16,14 @@ SUBSYSTEM_DEF(lighting)
 	return ..()
 
 
-/datum/controller/subsystem/lighting/Initialize(timeofday)
+/datum/controller/subsystem/lighting/Initialize()
 	if(!initialized)
 		create_all_lighting_objects()
 		initialized = TRUE
 
 	fire(FALSE, TRUE)
 
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/lighting/fire(resumed, init_tick_checks)
 	MC_SPLIT_TICK_INIT(3)
diff --git a/code/controllers/subsystem/lua.dm b/code/controllers/subsystem/lua.dm
index a02dc8c699f..262acb06f6b 100644
--- a/code/controllers/subsystem/lua.dm
+++ b/code/controllers/subsystem/lua.dm
@@ -1,5 +1,3 @@
-#define SSLUA_INIT_FAILED 2
-
 SUBSYSTEM_DEF(lua)
 	name = "Lua Scripting"
 	runlevels = RUNLEVEL_LOBBY | RUNLEVELS_DEFAULT
@@ -21,9 +19,8 @@ SUBSYSTEM_DEF(lua)
 	/// Protects return values from getting GCed before getting converted to lua values
 	var/gc_guard
 
-/datum/controller/subsystem/lua/Initialize(start_timeofday)
+/datum/controller/subsystem/lua/Initialize()
 	try
-
 		// Initialize the auxtools library
 		AUXTOOLS_CHECK(AUXLUA)
 
@@ -32,16 +29,11 @@ SUBSYSTEM_DEF(lua)
 		__lua_set_datum_proc_call_wrapper("/proc/wrap_lua_datum_proc_call")
 		__lua_set_global_proc_call_wrapper("/proc/wrap_lua_global_proc_call")
 		__lua_set_print_wrapper("/proc/wrap_lua_print")
-		return ..()
+		return SS_INIT_SUCCESS
 	catch(var/exception/e)
 		// Something went wrong, best not allow the subsystem to run
-		initialized = SSLUA_INIT_FAILED
-		can_fire = FALSE
-		var/time = (REALTIMEOFDAY - start_timeofday) / 10
-		var/msg = "Failed to initialize [name] subsystem after [time] seconds!"
-		to_chat(world, span_boldwarning("[msg]"))
-		warning(e.name)
-		return time
+		warning("Error initializing SSlua: [e.name]")
+		return SS_INIT_FAILURE
 
 /datum/controller/subsystem/lua/OnConfigLoad()
 	// Read the paths from the config file
@@ -55,7 +47,7 @@ SUBSYSTEM_DEF(lua)
 	AUXTOOLS_SHUTDOWN(AUXLUA)
 
 /datum/controller/subsystem/lua/proc/queue_resume(datum/lua_state/state, index, arguments)
-	if(initialized != TRUE)
+	if(!initialized)
 		return
 	if(!istype(state))
 		return
@@ -140,5 +132,3 @@ SUBSYSTEM_DEF(lua)
 	// Update every lua editor TGUI open for each state that had a task awakened or resumed
 	for(var/datum/lua_state/state in affected_states)
 		INVOKE_ASYNC(state, /datum/lua_state.proc/update_editors)
-
-#undef SSLUA_INIT_FAILED
diff --git a/code/controllers/subsystem/machines.dm b/code/controllers/subsystem/machines.dm
index 8bf09c82e6a..05f48674d92 100644
--- a/code/controllers/subsystem/machines.dm
+++ b/code/controllers/subsystem/machines.dm
@@ -10,7 +10,7 @@ SUBSYSTEM_DEF(machines)
 /datum/controller/subsystem/machines/Initialize()
 	makepowernets()
 	fire()
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/machines/proc/makepowernets()
 	for(var/datum/powernet/power_network as anything in powernets)
diff --git a/code/controllers/subsystem/mapping.dm b/code/controllers/subsystem/mapping.dm
index c35a6244252..6b0018e66f2 100644
--- a/code/controllers/subsystem/mapping.dm
+++ b/code/controllers/subsystem/mapping.dm
@@ -63,7 +63,7 @@ SUBSYSTEM_DEF(mapping)
 	/// list of traits and their associated z leves
 	var/list/z_trait_levels = list()
 
-/datum/controller/subsystem/mapping/New()
+/datum/controller/subsystem/mapping/PreInit()
 	..()
 #ifdef FORCE_MAP
 	config = load_map_config(FORCE_MAP, FORCE_MAP_DIRECTORY)
@@ -71,9 +71,9 @@ SUBSYSTEM_DEF(mapping)
 	config = load_map_config(error_if_missing = FALSE)
 #endif
 
-/datum/controller/subsystem/mapping/Initialize(timeofday)
+/datum/controller/subsystem/mapping/Initialize()
 	if(initialized)
-		return
+		return SS_INIT_SUCCESS
 	if(config.defaulted)
 		var/old_config = config
 		config = global.config.defaultmap
@@ -118,7 +118,7 @@ SUBSYSTEM_DEF(mapping)
 	generate_z_level_linkages()
 	calculate_default_z_level_gravities()
 
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/mapping/proc/calculate_default_z_level_gravities()
 	for(var/z_level in 1 to length(z_list))
diff --git a/code/controllers/subsystem/minor_mapping.dm b/code/controllers/subsystem/minor_mapping.dm
index 32a04f57ba4..c0f7dffafbc 100644
--- a/code/controllers/subsystem/minor_mapping.dm
+++ b/code/controllers/subsystem/minor_mapping.dm
@@ -5,10 +5,10 @@ SUBSYSTEM_DEF(minor_mapping)
 	init_order = INIT_ORDER_MINOR_MAPPING
 	flags = SS_NO_FIRE
 
-/datum/controller/subsystem/minor_mapping/Initialize(timeofday)
+/datum/controller/subsystem/minor_mapping/Initialize()
 	trigger_migration(CONFIG_GET(number/mice_roundstart))
 	place_satchels()
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/minor_mapping/proc/trigger_migration(num_mice=10)
 	var/list/exposed_wires = find_exposed_wires()
diff --git a/code/controllers/subsystem/movement/ai_movement.dm b/code/controllers/subsystem/movement/ai_movement.dm
index 2be37cd3838..db0b987eb31 100644
--- a/code/controllers/subsystem/movement/ai_movement.dm
+++ b/code/controllers/subsystem/movement/ai_movement.dm
@@ -9,9 +9,9 @@ MOVEMENT_SUBSYSTEM_DEF(ai_movement)
 	///an assoc list of all ai_movement types. Assoc type to instance
 	var/list/movement_types
 
-/datum/controller/subsystem/movement/ai_movement/Initialize(timeofday)
+/datum/controller/subsystem/movement/ai_movement/Initialize()
 	SetupAIMovementInstances()
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/movement/ai_movement/proc/SetupAIMovementInstances()
 	movement_types = list()
diff --git a/code/controllers/subsystem/nightshift.dm b/code/controllers/subsystem/nightshift.dm
index 09f01a0cc70..2115b53d83d 100644
--- a/code/controllers/subsystem/nightshift.dm
+++ b/code/controllers/subsystem/nightshift.dm
@@ -13,7 +13,7 @@ SUBSYSTEM_DEF(nightshift)
 /datum/controller/subsystem/nightshift/Initialize()
 	if(!CONFIG_GET(flag/enable_night_shifts))
 		can_fire = FALSE
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/nightshift/fire(resumed = FALSE)
 	if(resumed)
diff --git a/code/controllers/subsystem/overlays.dm b/code/controllers/subsystem/overlays.dm
index 34e22e1bde2..5b4f4ca1bb5 100644
--- a/code/controllers/subsystem/overlays.dm
+++ b/code/controllers/subsystem/overlays.dm
@@ -15,7 +15,7 @@ SUBSYSTEM_DEF(overlays)
 /datum/controller/subsystem/overlays/Initialize()
 	initialized = TRUE
 	fire(mc_check = FALSE)
-	return ..()
+	return SS_INIT_SUCCESS
 
 
 /datum/controller/subsystem/overlays/stat_entry(msg)
diff --git a/code/controllers/subsystem/parallax.dm b/code/controllers/subsystem/parallax.dm
index c45462dd216..4cc105ce6c1 100644
--- a/code/controllers/subsystem/parallax.dm
+++ b/code/controllers/subsystem/parallax.dm
@@ -1,7 +1,7 @@
 SUBSYSTEM_DEF(parallax)
 	name = "Parallax"
 	wait = 2
-	flags = SS_POST_FIRE_TIMING | SS_BACKGROUND
+	flags = SS_POST_FIRE_TIMING | SS_BACKGROUND | SS_NO_INIT
 	priority = FIRE_PRIORITY_PARALLAX
 	runlevels = RUNLEVEL_LOBBY | RUNLEVELS_DEFAULT
 	var/list/currentrun
diff --git a/code/controllers/subsystem/pathfinder.dm b/code/controllers/subsystem/pathfinder.dm
index 26f54245732..fbbe51003a6 100644
--- a/code/controllers/subsystem/pathfinder.dm
+++ b/code/controllers/subsystem/pathfinder.dm
@@ -8,7 +8,7 @@ SUBSYSTEM_DEF(pathfinder)
 /datum/controller/subsystem/pathfinder/Initialize()
 	space_type_cache = typecacheof(/turf/open/space)
 	mobs = new(10)
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/flowcache
 	var/lcount
diff --git a/code/controllers/subsystem/persistence.dm b/code/controllers/subsystem/persistence.dm
index 03308d1247a..6c46851d812 100644
--- a/code/controllers/subsystem/persistence.dm
+++ b/code/controllers/subsystem/persistence.dm
@@ -34,7 +34,7 @@ SUBSYSTEM_DEF(persistence)
 	load_custom_outfits()
 
 	load_adventures()
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/persistence/proc/collect_data()
 	save_wall_engravings()
diff --git a/code/controllers/subsystem/persistent_paintings.dm b/code/controllers/subsystem/persistent_paintings.dm
index 7f23b8df26d..b0124553def 100644
--- a/code/controllers/subsystem/persistent_paintings.dm
+++ b/code/controllers/subsystem/persistent_paintings.dm
@@ -130,7 +130,7 @@ SUBSYSTEM_DEF(persistent_paintings)
 		"supermatter" = PATRONAGE_LEGENDARY_FRAME
 			)
 
-/datum/controller/subsystem/persistent_paintings/Initialize(start_timeofday)
+/datum/controller/subsystem/persistent_paintings/Initialize()
 	var/json_file = file("data/paintings.json")
 	if(fexists(json_file))
 		var/list/raw_data = update_format(json_decode(file2text(json_file)))
@@ -142,7 +142,7 @@ SUBSYSTEM_DEF(persistent_paintings)
 	for(var/obj/structure/sign/painting/painting_frame as anything in painting_frames)
 		painting_frame.load_persistent()
 
-	return ..()
+	return SS_INIT_SUCCESS
 
 /**
  * Generates painting data ready to be consumed by ui.
diff --git a/code/controllers/subsystem/processing/ai_behaviors.dm b/code/controllers/subsystem/processing/ai_behaviors.dm
index 4c98567405c..4ec698db32b 100644
--- a/code/controllers/subsystem/processing/ai_behaviors.dm
+++ b/code/controllers/subsystem/processing/ai_behaviors.dm
@@ -9,9 +9,9 @@ PROCESSING_SUBSYSTEM_DEF(ai_behaviors)
 	///List of all ai_behavior singletons, key is the typepath while assigned value is a newly created instance of the typepath. See SetupAIBehaviors()
 	var/list/ai_behaviors
 
-/datum/controller/subsystem/processing/ai_behaviors/Initialize(timeofday)
+/datum/controller/subsystem/processing/ai_behaviors/Initialize()
 	SetupAIBehaviors()
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/processing/ai_behaviors/proc/SetupAIBehaviors()
 	ai_behaviors = list()
diff --git a/code/controllers/subsystem/processing/greyscale.dm b/code/controllers/subsystem/processing/greyscale.dm
index 9b7f1ad3935..0c0db7b4f70 100644
--- a/code/controllers/subsystem/processing/greyscale.dm
+++ b/code/controllers/subsystem/processing/greyscale.dm
@@ -7,7 +7,7 @@ PROCESSING_SUBSYSTEM_DEF(greyscale)
 	var/list/datum/greyscale_config/configurations = list()
 	var/list/datum/greyscale_layer/layer_types = list()
 
-/datum/controller/subsystem/processing/greyscale/Initialize(start_timeofday)
+/datum/controller/subsystem/processing/greyscale/Initialize()
 	for(var/datum/greyscale_layer/fake_type as anything in subtypesof(/datum/greyscale_layer))
 		layer_types[initial(fake_type.layer_type)] = fake_type
 
@@ -27,7 +27,7 @@ PROCESSING_SUBSYSTEM_DEF(greyscale)
 		var/datum/greyscale_config/config = configurations[greyscale_type]
 		config.CrossVerify()
 
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/processing/greyscale/proc/RefreshConfigsFromFile()
 	for(var/i in configurations)
diff --git a/code/controllers/subsystem/processing/instruments.dm b/code/controllers/subsystem/processing/instruments.dm
index 0d14c19c2bb..acee4480b94 100644
--- a/code/controllers/subsystem/processing/instruments.dm
+++ b/code/controllers/subsystem/processing/instruments.dm
@@ -25,7 +25,7 @@ PROCESSING_SUBSYSTEM_DEF(instruments)
 /datum/controller/subsystem/processing/instruments/Initialize()
 	initialize_instrument_data()
 	synthesizer_instrument_ids = get_allowed_instrument_ids()
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/processing/instruments/proc/on_song_new(datum/song/S)
 	songs += S
diff --git a/code/controllers/subsystem/processing/networks.dm b/code/controllers/subsystem/processing/networks.dm
index fd5da0dd25d..71dcc7fc0d5 100644
--- a/code/controllers/subsystem/processing/networks.dm
+++ b/code/controllers/subsystem/processing/networks.dm
@@ -72,7 +72,7 @@ SUBSYSTEM_DEF(networks)
 	// At round start, fix the network_id's so the station root is on them
 	initialized = TRUE
 	// Now when the objects Initialize they will join the right network
-	return ..()
+	return SS_INIT_SUCCESS
 
 /*
  * Process incoming queued packet and return NAK/ACK signals
diff --git a/code/controllers/subsystem/processing/quirks.dm b/code/controllers/subsystem/processing/quirks.dm
index ab7ca01814d..f485dc347d2 100644
--- a/code/controllers/subsystem/processing/quirks.dm
+++ b/code/controllers/subsystem/processing/quirks.dm
@@ -28,9 +28,9 @@ PROCESSING_SUBSYSTEM_DEF(quirks)
 		list("Extrovert", "Introvert"),
 	)
 
-/datum/controller/subsystem/processing/quirks/Initialize(timeofday)
+/datum/controller/subsystem/processing/quirks/Initialize()
 	get_quirks()
-	return ..()
+	return SS_INIT_SUCCESS
 
 /// Returns the list of possible quirks
 /datum/controller/subsystem/processing/quirks/proc/get_quirks()
diff --git a/code/controllers/subsystem/processing/reagents.dm b/code/controllers/subsystem/processing/reagents.dm
index 25e50c21b4c..50b4d5ad850 100644
--- a/code/controllers/subsystem/processing/reagents.dm
+++ b/code/controllers/subsystem/processing/reagents.dm
@@ -11,14 +11,13 @@ PROCESSING_SUBSYSTEM_DEF(reagents)
 	var/previous_world_time = 0
 
 /datum/controller/subsystem/processing/reagents/Initialize()
-	. = ..()
 	//So our first step isn't insane
 	previous_world_time = world.time
 	///Blacklists these reagents from being added to the master list. the exact type only. Children are not blacklisted.
 	GLOB.fake_reagent_blacklist = list(/datum/reagent/medicine/c2, /datum/reagent/medicine, /datum/reagent/reaction_agent)
 	//Build GLOB lists - see holder.dm
 	build_chemical_reactions_lists()
-	return
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/processing/reagents/fire(resumed = FALSE)
 	if (!resumed)
diff --git a/code/controllers/subsystem/processing/station.dm b/code/controllers/subsystem/processing/station.dm
index faa115ec4b2..20660babcd3 100644
--- a/code/controllers/subsystem/processing/station.dm
+++ b/code/controllers/subsystem/processing/station.dm
@@ -12,7 +12,7 @@ PROCESSING_SUBSYSTEM_DEF(station)
 	///Currently active announcer. Starts as a type but gets initialized after traits are selected
 	var/datum/centcom_announcer/announcer = /datum/centcom_announcer/default
 
-/datum/controller/subsystem/processing/station/Initialize(timeofday)
+/datum/controller/subsystem/processing/station/Initialize()
 
 	//If doing unit tests we don't do none of that trait shit ya know?
 	// Autowiki also wants consistent outputs, for example making sure the vending machine page always reports the normal products
@@ -22,7 +22,7 @@ PROCESSING_SUBSYSTEM_DEF(station)
 
 	announcer = new announcer() //Initialize the station's announcer datum
 
-	return ..()
+	return SS_INIT_SUCCESS
 
 ///Rolls for the amount of traits and adds them to the traits list
 /datum/controller/subsystem/processing/station/proc/SetupTraits()
diff --git a/code/controllers/subsystem/profiler.dm b/code/controllers/subsystem/profiler.dm
index 089131d0966..ddef191e5a3 100644
--- a/code/controllers/subsystem/profiler.dm
+++ b/code/controllers/subsystem/profiler.dm
@@ -21,7 +21,7 @@ SUBSYSTEM_DEF(profiler)
 		StartProfiling()
 	else
 		StopProfiling() //Stop the early start profiler
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/profiler/fire()
 	if(CONFIG_GET(flag/auto_profile))
diff --git a/code/controllers/subsystem/radio.dm b/code/controllers/subsystem/radio.dm
index 8299709392d..578b69b0d0e 100644
--- a/code/controllers/subsystem/radio.dm
+++ b/code/controllers/subsystem/radio.dm
@@ -5,7 +5,7 @@ SUBSYSTEM_DEF(radio)
 	var/list/datum/radio_frequency/frequencies = list()
 	var/list/saymodes = list()
 
-/datum/controller/subsystem/radio/PreInit(timeofday)
+/datum/controller/subsystem/radio/PreInit()
 	for(var/_SM in subtypesof(/datum/saymode))
 		var/datum/saymode/SM = new _SM()
 		saymodes[SM.key] = SM
diff --git a/code/controllers/subsystem/research.dm b/code/controllers/subsystem/research.dm
index f16ffe6e86c..0c0b48d19a8 100644
--- a/code/controllers/subsystem/research.dm
+++ b/code/controllers/subsystem/research.dm
@@ -81,7 +81,7 @@ SUBSYSTEM_DEF(research)
 	autosort_categories()
 	error_design = new
 	error_node = new
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/research/fire()
 	var/list/bitcoins = list()
diff --git a/code/controllers/subsystem/restaurant.dm b/code/controllers/subsystem/restaurant.dm
index 564155c62f9..7a795f72115 100644
--- a/code/controllers/subsystem/restaurant.dm
+++ b/code/controllers/subsystem/restaurant.dm
@@ -14,9 +14,9 @@ SUBSYSTEM_DEF(restaurant)
 	///Caches appearances of food, assoc list where key is the type of food, and value is the appearance. Used so we don't have to keep creating new food. Gets filled whenever a new food that hasn't been ordered gets ordered for the first time.
 	var/list/food_appearance_cache = list()
 
-/datum/controller/subsystem/restaurant/Initialize(timeofday)
-	. = ..()
+/datum/controller/subsystem/restaurant/Initialize()
 	for(var/key in subtypesof(/datum/venue))
 		all_venues[key] = new key()
 	for(var/key in subtypesof(/datum/customer_data))
 		all_customers[key] = new key()
+	return SS_INIT_SUCCESS
diff --git a/code/controllers/subsystem/security_level.dm b/code/controllers/subsystem/security_level.dm
index 3ca0b02deb9..9bd803602df 100644
--- a/code/controllers/subsystem/security_level.dm
+++ b/code/controllers/subsystem/security_level.dm
@@ -7,12 +7,12 @@ SUBSYSTEM_DEF(security_level)
 	/// A list of initialised security level datums.
 	var/list/available_levels = list()
 
-/datum/controller/subsystem/security_level/Initialize(start_timeofday)
-	. = ..()
+/datum/controller/subsystem/security_level/Initialize()
 	for(var/iterating_security_level_type in subtypesof(/datum/security_level))
 		var/datum/security_level/new_security_level = new iterating_security_level_type
 		available_levels[new_security_level.name] = new_security_level
 	current_security_level = available_levels[number_level_to_text(SEC_LEVEL_GREEN)]
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/security_level/fire(resumed)
 	if(!current_security_level.looping_sound) // No sound? No play.
diff --git a/code/controllers/subsystem/server_maint.dm b/code/controllers/subsystem/server_maint.dm
index d5f3c1c2e8f..15fecf2a029 100644
--- a/code/controllers/subsystem/server_maint.dm
+++ b/code/controllers/subsystem/server_maint.dm
@@ -18,7 +18,7 @@ SUBSYSTEM_DEF(server_maint)
 /datum/controller/subsystem/server_maint/PreInit()
 	world.hub_password = "" //quickly! before the hubbies see us.
 
-/datum/controller/subsystem/server_maint/Initialize(timeofday)
+/datum/controller/subsystem/server_maint/Initialize()
 	if (CONFIG_GET(flag/hub))
 		world.update_hub_visibility(TRUE)
 	//Keep in mind, because of how delay works adding a list here makes each list take wait * delay more time to clear
@@ -31,7 +31,7 @@ SUBSYSTEM_DEF(server_maint)
 		"dead_mob_list" = GLOB.dead_mob_list,
 		"keyloop_list" = GLOB.keyloop_list, //A null here will cause new clients to be unable to move. totally unacceptable
 	)
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/server_maint/fire(resumed = FALSE)
 	if(!resumed)
diff --git a/code/controllers/subsystem/shuttle.dm b/code/controllers/subsystem/shuttle.dm
index 362f9334b6d..fd52780deb5 100644
--- a/code/controllers/subsystem/shuttle.dm
+++ b/code/controllers/subsystem/shuttle.dm
@@ -135,7 +135,7 @@ SUBSYSTEM_DEF(shuttle)
 	/// Did the supermatter start a cascade event?
 	var/supermatter_cascade = FALSE
 
-/datum/controller/subsystem/shuttle/Initialize(timeofday)
+/datum/controller/subsystem/shuttle/Initialize()
 	order_number = rand(1, 9000)
 
 	var/list/pack_processing = subtypesof(/datum/supply_pack)
@@ -166,7 +166,7 @@ SUBSYSTEM_DEF(shuttle)
 		log_mapping("No /obj/docking_port/mobile/emergency/backup placed on the map!")
 	if(!supply)
 		log_mapping("No /obj/docking_port/mobile/supply placed on the map!")
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/shuttle/proc/setup_shuttles(list/stationary)
 	for(var/obj/docking_port/stationary/port as anything in stationary)
diff --git a/code/controllers/subsystem/skills.dm b/code/controllers/subsystem/skills.dm
index c7256a42b32..fdf868cf1f7 100644
--- a/code/controllers/subsystem/skills.dm
+++ b/code/controllers/subsystem/skills.dm
@@ -1,4 +1,4 @@
-/*! 
+/*!
 This subsystem mostly exists to populate and manage the skill singletons.
 */
 
@@ -7,16 +7,16 @@ SUBSYSTEM_DEF(skills)
 	flags = SS_NO_FIRE
 	init_order = INIT_ORDER_SKILLS
 	///Dictionary of skill.type || skill ref
-	var/list/all_skills = list() 
+	var/list/all_skills = list()
 	///List of level names with index corresponding to skill level
 	var/list/level_names = list("None", "Novice", "Apprentice", "Journeyman", "Expert", "Master", "Legendary") //List of skill level names. Note that indexes can be accessed like so: level_names[SKILL_LEVEL_NOVICE]
 
-/datum/controller/subsystem/skills/Initialize(timeofday)
+/datum/controller/subsystem/skills/Initialize()
 	InitializeSkills()
-	return ..()
+	return SS_INIT_SUCCESS
 
 ///Ran on initialize, populates the skills dictionary
-/datum/controller/subsystem/skills/proc/InitializeSkills(timeofday)
+/datum/controller/subsystem/skills/proc/InitializeSkills()
 	for(var/type in GLOB.skill_types)
 		var/datum/skill/ref = new type
 		all_skills[type] = ref
diff --git a/code/controllers/subsystem/sounds.dm b/code/controllers/subsystem/sounds.dm
index 7d94a3d21d7..9067c077da7 100644
--- a/code/controllers/subsystem/sounds.dm
+++ b/code/controllers/subsystem/sounds.dm
@@ -25,7 +25,7 @@ SUBSYSTEM_DEF(sounds)
 
 /datum/controller/subsystem/sounds/Initialize()
 	setup_available_channels()
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/sounds/proc/setup_available_channels()
 	channel_list = list()
diff --git a/code/controllers/subsystem/spatial_gridmap.dm b/code/controllers/subsystem/spatial_gridmap.dm
index b9dc0988840..6afa8a95055 100644
--- a/code/controllers/subsystem/spatial_gridmap.dm
+++ b/code/controllers/subsystem/spatial_gridmap.dm
@@ -102,12 +102,13 @@ SUBSYSTEM_DEF(spatial_grid)
 	///how many pregenerated /mob/oranges_ear instances currently exist. this should hopefully never exceed its starting value
 	var/number_of_oranges_ears = NUMBER_OF_PREGENERATED_ORANGES_EARS
 
-/datum/controller/subsystem/spatial_grid/Initialize(start_timeofday)
-	. = ..()
-
+/datum/controller/subsystem/spatial_grid/Initialize()
 	cells_on_x_axis = SPATIAL_GRID_CELLS_PER_SIDE(world.maxx)
 	cells_on_y_axis = SPATIAL_GRID_CELLS_PER_SIDE(world.maxy)
 
+	// enter_cell only runs if 'initialized'
+	initialized = TRUE
+
 	for(var/datum/space_level/z_level as anything in SSmapping.z_list)
 		propogate_spatial_grid_to_new_z(null, z_level)
 		CHECK_TICK
@@ -126,6 +127,7 @@ SUBSYSTEM_DEF(spatial_grid)
 
 	RegisterSignal(SSdcs, COMSIG_GLOB_NEW_Z, .proc/propogate_spatial_grid_to_new_z)
 	RegisterSignal(SSdcs, COMSIG_GLOB_EXPANDED_WORLD_BOUNDS, .proc/after_world_bounds_expanded)
+	return SS_INIT_SUCCESS
 
 ///add a movable to the pre init queue for whichever type is specified so that when the subsystem initializes they get added to the grid
 /datum/controller/subsystem/spatial_grid/proc/enter_pre_init_queue(atom/movable/waiting_movable, type)
diff --git a/code/controllers/subsystem/statpanel.dm b/code/controllers/subsystem/statpanel.dm
index be5272092c5..b296ee8f8b9 100644
--- a/code/controllers/subsystem/statpanel.dm
+++ b/code/controllers/subsystem/statpanel.dm
@@ -5,6 +5,7 @@ SUBSYSTEM_DEF(statpanels)
 	init_stage = INITSTAGE_EARLY
 	priority = FIRE_PRIORITY_STATPANEL
 	runlevels = RUNLEVELS_DEFAULT | RUNLEVEL_LOBBY
+	flags = SS_NO_INIT
 	var/list/currentrun = list()
 	var/list/global_data
 	var/list/mc_data
diff --git a/code/controllers/subsystem/stickyban.dm b/code/controllers/subsystem/stickyban.dm
index 7d027cb845d..757df6a2266 100644
--- a/code/controllers/subsystem/stickyban.dm
+++ b/code/controllers/subsystem/stickyban.dm
@@ -9,7 +9,7 @@ SUBSYSTEM_DEF(stickyban)
 	var/dbcacheexpire = 0
 
 
-/datum/controller/subsystem/stickyban/Initialize(timeofday)
+/datum/controller/subsystem/stickyban/Initialize()
 	if (length(GLOB.stickybanadminexemptions))
 		restore_stickybans()
 	var/list/bannedkeys = sticky_banned_ckeys()
@@ -61,7 +61,7 @@ SUBSYSTEM_DEF(stickyban)
 		cache[ckey] = ban
 		world.SetConfig("ban", ckey, list2stickyban(ban))
 
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/stickyban/proc/Populatedbcache()
 	var/newdbcache = list() //so if we runtime or the db connection dies we don't kill the existing cache
diff --git a/code/controllers/subsystem/sun.dm b/code/controllers/subsystem/sun.dm
index 378ee34b5fd..59cc9912d8f 100644
--- a/code/controllers/subsystem/sun.dm
+++ b/code/controllers/subsystem/sun.dm
@@ -6,12 +6,12 @@ SUBSYSTEM_DEF(sun)
 	var/azimuth_mod = 1 ///multiplier against base_rotation
 	var/base_rotation = 6 ///base rotation in degrees per fire
 
-/datum/controller/subsystem/sun/Initialize(start_timeofday)
+/datum/controller/subsystem/sun/Initialize()
 	azimuth = rand(0, 359)
 	azimuth_mod = round(rand(50, 200)/100, 0.01) // 50% - 200% of standard rotation
 	if(prob(50))
 		azimuth_mod *= -1
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/sun/fire(resumed = FALSE)
 	azimuth += azimuth_mod * base_rotation
diff --git a/code/controllers/subsystem/tcgsetup.dm b/code/controllers/subsystem/tcgsetup.dm
index c07482db12c..ffd3c1c56e5 100644
--- a/code/controllers/subsystem/tcgsetup.dm
+++ b/code/controllers/subsystem/tcgsetup.dm
@@ -22,7 +22,7 @@ SUBSYSTEM_DEF(trading_card_game)
 //Let's load the cards before the map fires, so we can load cards on the map safely
 /datum/controller/subsystem/trading_card_game/Initialize()
 	reloadAllCardFiles()
-	return ..()
+	return SS_INIT_SUCCESS
 
 ///Loads all the card files
 /datum/controller/subsystem/trading_card_game/proc/loadAllCardFiles()
diff --git a/code/controllers/subsystem/ticker.dm b/code/controllers/subsystem/ticker.dm
index 368a48c1047..ed8b6994cbe 100755
--- a/code/controllers/subsystem/ticker.dm
+++ b/code/controllers/subsystem/ticker.dm
@@ -62,7 +62,7 @@ SUBSYSTEM_DEF(ticker)
 	/// Why an emergency shuttle was called
 	var/emergency_reason
 
-/datum/controller/subsystem/ticker/Initialize(timeofday)
+/datum/controller/subsystem/ticker/Initialize()
 	var/list/byond_sound_formats = list(
 		"mid" = TRUE,
 		"midi" = TRUE,
@@ -140,7 +140,7 @@ SUBSYSTEM_DEF(ticker)
 		gametime_offset = rand(0, 23) HOURS
 	else if(CONFIG_GET(flag/shift_time_realtime))
 		gametime_offset = world.timeofday
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/ticker/fire()
 	switch(current_state)
diff --git a/code/controllers/subsystem/time_track.dm b/code/controllers/subsystem/time_track.dm
index c2a0ff0f195..3cf91c71e50 100644
--- a/code/controllers/subsystem/time_track.dm
+++ b/code/controllers/subsystem/time_track.dm
@@ -41,8 +41,7 @@ SUBSYSTEM_DEF(time_track)
 		"SendMaps: Per client: Map data: Look for movable changes: Movables examined" = "movables_examined",
 	)
 
-/datum/controller/subsystem/time_track/Initialize(start_timeofday)
-	. = ..()
+/datum/controller/subsystem/time_track/Initialize()
 	GLOB.perf_log = "[GLOB.log_directory]/perf-[GLOB.round_id ? GLOB.round_id : "NULL"]-[SSmapping.config?.map_name].csv"
 	world.Profile(PROFILE_RESTART, type = "sendmaps")
 	//Need to do the sendmaps stuff in its own file, since it works different then everything else
@@ -78,7 +77,7 @@ SUBSYSTEM_DEF(time_track)
 			"queries_standby"
 		) + sendmaps_headers
 	)
-
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/time_track/fire()
 
diff --git a/code/controllers/subsystem/title.dm b/code/controllers/subsystem/title.dm
index b8ab24b5c5a..7b18a1c2761 100644
--- a/code/controllers/subsystem/title.dm
+++ b/code/controllers/subsystem/title.dm
@@ -11,7 +11,7 @@ SUBSYSTEM_DEF(title)
 
 /datum/controller/subsystem/title/Initialize()
 	if(file_path && icon)
-		return
+		return SS_INIT_SUCCESS
 
 	if(fexists("data/previous_title.dat"))
 		var/previous_path = file2text("data/previous_title.dat")
@@ -42,7 +42,7 @@ SUBSYSTEM_DEF(title)
 		splash_turf.icon = icon
 		splash_turf.handle_generic_titlescreen_sizes()
 
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/title/vv_edit_var(var_name, var_value)
 	. = ..()
diff --git a/code/controllers/subsystem/traitor.dm b/code/controllers/subsystem/traitor.dm
index b5b85da5deb..1fbdf0c8d49 100644
--- a/code/controllers/subsystem/traitor.dm
+++ b/code/controllers/subsystem/traitor.dm
@@ -40,8 +40,7 @@ SUBSYSTEM_DEF(traitor)
 	/// A list of all existing objectives by type
 	var/list/all_objectives_by_type = list()
 
-/datum/controller/subsystem/traitor/Initialize(start_timeofday)
-	. = ..()
+/datum/controller/subsystem/traitor/Initialize()
 	category_handler = new()
 	traitor_debug_panel = new(category_handler)
 
@@ -52,6 +51,7 @@ SUBSYSTEM_DEF(traitor)
 			if(!actual_typepath)
 				log_world("[configuration_path] has an invalid type ([typepath]) that doesn't exist in the codebase! Please correct or remove [typepath]")
 			configuration_data[actual_typepath] = data[typepath]
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/traitor/fire(resumed)
 	var/player_count = length(GLOB.alive_player_list)
diff --git a/code/controllers/subsystem/vis_overlays.dm b/code/controllers/subsystem/vis_overlays.dm
index 0572532fda6..ddda44bbbbb 100644
--- a/code/controllers/subsystem/vis_overlays.dm
+++ b/code/controllers/subsystem/vis_overlays.dm
@@ -9,7 +9,7 @@ SUBSYSTEM_DEF(vis_overlays)
 
 /datum/controller/subsystem/vis_overlays/Initialize()
 	vis_overlay_cache = list()
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/vis_overlays/fire(resumed = FALSE)
 	if(!resumed)
diff --git a/code/controllers/subsystem/vote.dm b/code/controllers/subsystem/vote.dm
index 853473aac83..7b93103973f 100644
--- a/code/controllers/subsystem/vote.dm
+++ b/code/controllers/subsystem/vote.dm
@@ -18,7 +18,7 @@ SUBSYSTEM_DEF(vote)
 	/// A list of all ckeys currently voting for the current vote.
 	var/list/voting = list()
 
-/datum/controller/subsystem/vote/Initialize(start_timeofday)
+/datum/controller/subsystem/vote/Initialize()
 	for(var/vote_type in subtypesof(/datum/vote))
 		var/datum/vote/vote = new vote_type()
 		if(!vote.is_accessible_vote())
@@ -27,7 +27,7 @@ SUBSYSTEM_DEF(vote)
 
 		possible_votes[vote.name] = vote
 
-	return ..()
+	return SS_INIT_SUCCESS
 
 
 // Called by master_controller
diff --git a/code/controllers/subsystem/wardrobe.dm b/code/controllers/subsystem/wardrobe.dm
index e255b66223f..06f0d948f79 100644
--- a/code/controllers/subsystem/wardrobe.dm
+++ b/code/controllers/subsystem/wardrobe.dm
@@ -38,8 +38,7 @@ SUBSYSTEM_DEF(wardrobe)
 	/// How many items would we make just by loading the master list once?
 	var/one_go_master = 0
 
-/datum/controller/subsystem/wardrobe/Initialize(start_timeofday)
-	. = ..()
+/datum/controller/subsystem/wardrobe/Initialize()
 	setup_callbacks()
 	load_outfits()
 	load_species()
@@ -47,6 +46,7 @@ SUBSYSTEM_DEF(wardrobe)
 	hard_refresh_queue()
 	stock_hit = 0
 	stock_miss = 0
+	return SS_INIT_SUCCESS
 
 /// Resets the load queue to the master template, accounting for the existing stock
 /datum/controller/subsystem/wardrobe/proc/hard_refresh_queue()
diff --git a/code/controllers/subsystem/weather.dm b/code/controllers/subsystem/weather.dm
index 8afd2550f89..34d51f679cc 100644
--- a/code/controllers/subsystem/weather.dm
+++ b/code/controllers/subsystem/weather.dm
@@ -32,7 +32,7 @@ SUBSYSTEM_DEF(weather)
 		var/randTime = rand(3000, 6000)
 		next_hit_by_zlevel["[z]"] = addtimer(CALLBACK(src, .proc/make_eligible, z, possible_weather), randTime + initial(our_event.weather_duration_upper), TIMER_UNIQUE|TIMER_STOPPABLE) //Around 5-10 minutes between weathers
 
-/datum/controller/subsystem/weather/Initialize(start_timeofday)
+/datum/controller/subsystem/weather/Initialize()
 	for(var/V in subtypesof(/datum/weather))
 		var/datum/weather/W = V
 		var/probability = initial(W.probability)
@@ -43,7 +43,7 @@ SUBSYSTEM_DEF(weather)
 			for(var/z in SSmapping.levels_by_trait(target_trait))
 				LAZYINITLIST(eligible_zlevels["[z]"])
 				eligible_zlevels["[z]"][W] = probability
-	return ..()
+	return SS_INIT_SUCCESS
 
 /datum/controller/subsystem/weather/proc/update_z_level(datum/space_level/level)
 	var/z = level.z_value
diff --git a/code/controllers/subsystem/wiremod_composite.dm b/code/controllers/subsystem/wiremod_composite.dm
index 33863f073ea..15b21beefa1 100644
--- a/code/controllers/subsystem/wiremod_composite.dm
+++ b/code/controllers/subsystem/wiremod_composite.dm
@@ -11,7 +11,7 @@ SUBSYSTEM_DEF(wiremod_composite)
 	/// The templates created and stored
 	var/list/templates = list()
 
-/datum/controller/subsystem/wiremod_composite/New()
+/datum/controller/subsystem/wiremod_composite/PreInit()
 	. = ..()
 	// This needs to execute before global variables have initialized.
 	for(var/datum/circuit_composite_template/type as anything in subtypesof(/datum/circuit_composite_template))
@@ -19,11 +19,11 @@ SUBSYSTEM_DEF(wiremod_composite)
 			continue
 		templates[initial(type.datatype)] = new type()
 
-/datum/controller/subsystem/wiremod_composite/Initialize(start_timeofday)
-	. = ..()
+/datum/controller/subsystem/wiremod_composite/Initialize()
 	for(var/type in templates)
 		var/datum/circuit_composite_template/template = templates[type]
 		template.Initialize()
+	return SS_INIT_SUCCESS
 
 /**
  * Used to produce a composite datatype using another datatype, or