Scheduler, observation, and New() tweaks.

Corrects a number of places where New() did not call ..(), and implements similar changes to attempt to ensure New()/initialize() complete running before qdel() runs.
Cuts down on the number of created items during server start.

code/game/objects/effects/effect_system.dm

@@ -123,7 +123,6 @@ steam.start() -- spawns the effect
 	var/turf/T = src.loc
 	if (istype(T, /turf))
 		T.hotspot_expose(1000,100)
-	return
 
 /datum/effect/effect/system/spark_spread
 	var/total_sparks = 0 // To stop it being spammed and lagging!
@@ -188,7 +187,6 @@ steam.start() -- spawns the effect
 	..()
 	spawn (time_to_live)
 		qdel(src)
-	return
 
 /obj/effect/effect/smoke/Crossed(mob/living/carbon/M as mob )
 	..()