Subsystem created... works!

code/game/objects/structures/false_walls.dm

@@ -82,7 +82,7 @@
 	if(density)
 		icon_state = initial(icon_state)
 		smooth = SMOOTH_TRUE
-		smooth_icon(src)
+		queue_smooth(src)
 	else
 		icon_state = "fwall_open"
 
@@ -322,4 +322,4 @@
 	mineral = /obj/item/stack/sheet/mineral/plastitanium
 	walltype = /turf/simulated/wall/mineral/plastitanium
 	smooth = SMOOTH_MORE
-	canSmoothWith = list(/turf/simulated/wall/mineral/plastitanium, /obj/machinery/door/airlock/shuttle, /obj/machinery/door/airlock, /obj/structure/window/full/shuttle, /obj/structure/shuttle/engine/heater)
+	canSmoothWith = list(/turf/simulated/wall/mineral/plastitanium, /obj/machinery/door/airlock/shuttle, /obj/machinery/door/airlock, /obj/structure/window/full/shuttle, /obj/structure/shuttle/engine/heater)

code/game/objects/structures/tables_racks.dm

@@ -50,8 +50,8 @@
 /obj/structure/table/update_icon()
 	if(smooth && !flipped)
 		icon_state = ""
-		smooth_icon(src)
-		smooth_icon_neighbors(src)
+		queue_smooth(src)
+		queue_smooth_neighbors(src)
 
 	if(flipped)
 		clear_smooth_overlays()

code/game/objects/structures/window.dm

@@ -425,7 +425,7 @@ var/global/wcCommon = pick(list("#379963", "#0d8395", "#58b5c3", "#49e46e", "#8f
 /obj/structure/window/proc/update_nearby_icons()
 	update_icon()
 	if(smooth)
-		smooth_icon_neighbors(src)
+		queue_smooth_neighbors(src)
 
 /obj/structure/window/update_icon()
 	if(!QDELETED(src))
@@ -434,7 +434,7 @@ var/global/wcCommon = pick(list("#379963", "#0d8395", "#58b5c3", "#49e46e", "#8f
 		var/ratio = obj_integrity / max_integrity
 		ratio = CEILING(ratio*4, 1) * 25
 		if(smooth)
-			smooth_icon(src)
+			queue_smooth(src)
 		overlays -= crack_overlay
 		if(ratio > 75)
 			return
@@ -714,4 +714,4 @@ obj/structure/window/full/reinforced/ice
 	dir = FULLTILE_WINDOW_DIR
 	max_integrity = 120
 	level = 3
-	glass_amount = 2
+	glass_amount = 2