Removed all the setting properties to null in destroy methods that don't need them since destroy nullifies all properties.

app/lib/LevelLoader.coffee

@@ -232,9 +232,4 @@ module.exports = class LevelLoader extends CocoClass
     Backbone.Mediator.publish 'level-loader:progress-changed', progress: @progress()
     @initWorld() if @allDone()
     @trigger 'progress'
-    @trigger 'loaded-all' if @progress() is 1
-
-  destroy: ->
-    @world = null  # don't hold onto garbage
-    @update = null
-    super()
+    @trigger 'loaded-all' if @progress() is 1

app/lib/surface/Camera.coffee

@@ -307,7 +307,6 @@ module.exports = class Camera extends CocoClass
 
   destroy: ->
     createjs.Tween.removeTweens @
-    @finishTween = null
     super()
 
   onZoomTo: (pos, time) ->

app/lib/surface/CocoSprite.coffee

@@ -87,7 +87,6 @@ module.exports = CocoSprite = class CocoSprite extends CocoClass
     mark.destroy() for name, mark of @marks
     label.destroy() for name, label of @labels
     @imageObject?.off 'animationend', @playNextAction
-    @playNextAction = null
     @displayObject?.off()
     clearInterval @effectInterval if @effectInterval
     super()

app/lib/surface/Surface.coffee

@@ -100,12 +100,7 @@ module.exports = Surface = class Surface extends CocoClass
     @stage.removeAllEventListeners()
     @stage.enableDOMEvents false
     @stage.enableMouseOver 0
-    @onFramesScrubbed = null
-    @onMouseMove = null
-    @onMouseDown = null
-    @tick = null
     @canvas.off 'mousewheel', @onMouseWheel
-    @onMouseWheel = null
     super()
 
   setWorld: (@world) ->

app/views/kinds/CocoView.coffee

@@ -42,7 +42,6 @@ module.exports = class CocoView extends Backbone.View
     @stopListeningToShortcuts()
     @undelegateEvents() # removes both events and subs
     view.destroy() for id, view of @subviews
-    @modalClosed = null
     $('#modal-wrapper .modal').off 'hidden.bs.modal', @modalClosed
     @[key] = undefined for key, value of @
     @destroyed = true

app/views/play/level/hud_view.coffee

@@ -355,8 +355,6 @@ module.exports = class HUDView extends View
 
   destroy: ->
     @stage?.stopTalking()
-    @addMoreMessage = null
-    @animateEnterButton = null
     clearInterval(@messageInterval) if @messageInterval
     clearTimeout @hintNextSelectionTimeout if @hintNextSelectionTimeout
     super()

app/views/play/level/level_chat_view.coffee

@@ -123,5 +123,4 @@ module.exports = class LevelChatView extends View
   destroy: ->
     key.deleteScope('level')
     clearInterval @clearOldMessagesInterval if @clearOldMessagesInterval
-    @clearOldMessages = null
     super()

app/views/play/level/playback_view.coffee

@@ -221,7 +221,3 @@ module.exports = class PlaybackView extends View
     me.set('music', not me.get('music'))
     me.save()
     $(document.activeElement).blur()
-
-  destroy: ->
-    @onWindowResize = null
-    super()

app/views/play/level/tome/cast_button_view.coffee

@@ -94,9 +94,3 @@ module.exports = class CastButtonView extends View
     spell.view.setAutocastDelay delay for spellKey, spell of @spells
     @castOptions.find('a').each ->
       $(@).toggleClass('selected', parseInt($(@).attr('data-delay')) is delay)
-
-  destroy: ->
-    @castButton.off 'click', @onCastButtonClick
-    @castOptions.find('a').off 'click', @onCastOptionsClick
-    @onCastOptionsClick = null
-    super()

app/views/play/level/tome/spell_debug_view.coffee

@@ -162,5 +162,4 @@ module.exports = class DebugView extends View
 
   destroy: ->
     @ace?.removeEventListener "mousemove", @onMouseMove
-    @onMouseMove = null
     super()

app/views/play/level/tome/spell_list_entry_view.coffee

@@ -108,5 +108,4 @@ module.exports = class SpellListEntryView extends View
     
   destroy: ->
     @avatar?.destroy()
-    @hideThangs = null
     super()

app/views/play/level/tome/spell_list_view.coffee

@@ -93,5 +93,4 @@ module.exports = class SpellListView extends View
 
   destroy: ->
     entry.destroy() for entry in @entries
-    @sortScoreForSpell = null
     super()

app/views/play/level/tome/spell_view.coffee

@@ -575,13 +575,7 @@ module.exports = class SpellView extends View
     @firepad?.dispose()
     @ace?.commands.removeCommand command for command in @aceCommands
     @ace?.destroy()
-    @ace = null
     @aceDoc?.off 'change', @onCodeChangeMetaHandler
-    @aceDoc = null
     @aceSession?.selection.off 'changeCursor', @onCursorActivity
-    @aceSession = null
     @debugView?.destroy()
-    @spell = null
-    for fat in ['notifySpellChanged', 'notifyEditingEnded', 'notifyEditingBegan', 'onFirepadLoaded', 'onLoaded', 'toggleBackground', 'setRecompileNeeded', 'onCursorActivity', 'highlightCurrentLine', 'updateAether', 'onCodeChangeMetaHandler', 'recompileIfNeeded', 'currentAutocastHandler']
-      @[fat] = null
     super()

app/views/play/level/tome/thang_list_view.coffee

@@ -83,6 +83,5 @@ module.exports = class ThangListView extends View
 
   destroy: ->
     entry.destroy() for entry in @entries
-    @sortScoreForThang = null
     super()
 

app/views/play/level/tome/tome_view.coffee

@@ -219,5 +219,4 @@ module.exports = class TomeView extends View
   destroy: ->
     spell.destroy() for spellKey, spell of @spells
     @worker?._close()
-    @worker = null
     super()

app/views/play/level_view.coffee

@@ -472,9 +472,4 @@ module.exports = class PlayLevelView extends View
     @bus?.destroy()
     #@instance.save() unless @instance.loading
     console.profileEnd?() if PROFILE_ME
-    @onLevelLoadError = null
-    @onLevelLoaderLoaded = null
-    @onSupermodelLoadedOne = null
-    @preloadNextLevel = null
-    @saveScreenshot = null
     super()

app/views/play/spectate_view.coffee

@@ -476,9 +476,4 @@ module.exports = class SpectateLevelView extends View
     delete window.world # not sure where this is set, but this is one way to clean it up
     clearInterval(@pointerInterval)
     console.profileEnd?() if PROFILE_ME
-    @onLevelLoadError = null
-    @onLevelLoaderLoaded = null
-    @onSupermodelLoadedOne = null
-    @preloadNextLevel = null
-    @saveScreenshot = null
     super()