To be honest WoW could use a bit of diversity in their voice actors. All female night elves sounding like Tyrande is not that big a problem ... unless the whole quest chain revolves around her and her clones acompany her search for "HER BELOVED ONE"!!!!

Good lord is the acting in Legion jumping between grueling (WHERE ARE YOU MY BELOVED!) and impressively great (Runas the Shamed). Same for the artifacts quests: They vary between "look, here is her bow, now shut up about Alleria", "Thrall fell down and now wont hold the Doomhammer anymore" and impressive original ideas like the shadow weapon, survival Spear or the talking skull of demonology.