I know this was posted months ago, but I gotta throw this out there. What if Ultra kills, engrams, and 3oC was level based? With that being said, the higher you are in light level, the lower % of 3oC working, the lower % of a random exotic engrams dropped w/o 3oC, and the higher cool down of boss kills. Like a level 12>24>30>40>250>337>400. It makes the higher levels work more for the same item. I should test some 3oC use on my level 2 Warlock. But I need to build up a collection of 3oC.