Well if we think about what the game needs… well we only have a few specs that can use dagger\bow.
So if they dont use dagger or bow my money would be on a caster spec since we also need more range. Just based on what the game lacks i think we might be getting a magic\bow\gunner spec since we have tons of melee and only 2 specs that use bows.
Would be crazy if they added in another 2 hander class