I absolutely hated BRD pre-heavensward, now it's rocketed to one of my favourites >_>. Cast bar really doesn't bother me, in fact it makes it feel more powerful to me instead of being a hodge-podge of rapid but weak-feeling skills with weak sounding sound effects bar Misery's End. Barrage -> Emp and Sidewinder feel so satisfying. Only thing that bugs me is Empyreal's bizarre nature of being a weaponskill with a cd and cast bar.

Anyway, as for least favourite, PLD or DRG. PLD just bores me to tears, and I'm not a fan of more rigid rotations - even if random positional procs try and downplay that nature.