They should rework the whole right side of the tree, maybe focus more on Meteor and Flamestrike and give Living Bomb to Sunfury only (it’s thematic as well since… it’s Kael’thas). A lot of Sunfury talents are wasted on “bird does this and this talent makes it do that”.
Just put everything in 1 talent for the bird and incorporate LB somewhere in the tree. Maybe even as an active skill again. Remove “Merely a Setback” talent because it’s embarrassing and replace it with something actually useful.
I can go on and on since they missed the mark with Sunfury imo while they had all the ideas and mechanics already, especially from HotS and even WC3.