sometimes less is more. I can appreciate what Bioware tried with swtor but in the end I have to admit I jumped the hype train because it doesn't really make sense in a MMO - at all. I know everybody wants a piece of the cake but they really should stick to single player games. That's where the VA budget makes sense, that's where you need the immersion.
GW2 voice work is OK. I don't mind the occasional voiced dialoge during storyline quests but really, it's not needed in a game like this. At least Arenanet didnt lose focus when it comes to the real meat of MMO gaming - gameplay, community, PvP.