Unless I've missed something (wholly possible) describing the loot available through the event as something that "affects light levels" is slightly disingenuous.
I gather that they are cosmetic items that, being potentially infusable, don't effectively block you from ever using them when actually playing the game, the way the collector's edition items do (I would've absolutely preferred that they could be infused as well). Come to think of it, I see no reason the masks from Halloween shouldn't be infusable as well.
But in truth I really am not paying all that much attention, if there's another nefarious layer to this I will stand corrected.
