A lot of people blamed her new voice because it does not sound like her anymore, not enough anger and hate, some line let people want to laugh. When I heard about her voice change and so many people hate the new voice. I thought "It couldn't be that bad" but when I actually heard it, I thought"WOW, it really is." Piera Coppola really did a very good job in WC3, even they could not get her back in WOW, they shouldn't use such a horrible new voice actor, it's like she did not understand the character.
3.3.2 Sylvanas' comments on Arthas' death is...well, not strong enough, both the lines and the voice acting, not enough emotion, it's like Lois Griffin trying to be cool. maybe Blizzard did not give her strong lines because the new voice actor could no do well.