Copy to my post on the original release forum
This is an augmentation evoker tree, not devastation. Increases black dragonflight damage, mass disintegrate doesn’t make a lot of sense since we have better uncapped AoE spells, etc. and I agree with a lot of the comments above. Making deep breath a part of the core rotation seems like a really odd choice.
Maneuverability should just be standard in the kit - the reason people don’t risk using deep breath is because you cannot cancel it mid flight and occasionally go right into the swirlies. This MIGHT make deep breath usable as a single target ability, but I don’t want to have to fly in a circle around the boss to use it.