- Developers’ notes: To make our raid buffs more equal across varied group compositions, we’re reducing the effectiveness of Arcane Intellect and Chaos Brand from 5% to 3%. We feel this will help to improve the balance of caster heavy versus melee heavy groups when participating in non-raid content.
Turns out I wasn’t so wrong after all 
Literally they made this a day after my OP, still work to do but it’s a step in the right direction.