It depends really, yeah probably can get top on arcdps but that doesnt take into account all the barrier,boons and healing along with the rng nature of meteor shower that makes the damage easily negated, although i'd be alright if they buffed the damage a bit to other skills on staff
Projectile speed probably won't help unless you want them thrown back at you quicker lol, Lava font should hit on cast, should of done that when they nerfed it by 40% because it was too strong in PvE