Keep in mind it’s cooldown regen, not reduction, so it’s actually less than 10% cooldown reduction and stacks badly with cooldown reduction to boot. I think it’s probably the worst quest. 10% power will mean some things die in less hits for sure, with all the different enemy types and attacks, damage cleave, and stagger states, it’s guaranteed to reduce attacks to kill over the course of a level. Personally I’d consider that more impactful than a very very slight increase in the number of Ults across a level, but I can certainly see why some might not agree.