Hm...... the cinematics were never cartoony. Well maybe some proportions were a bit off, the expressions were a bit excegerated (spelling?
) etc. But not like the cartoony in-game graphics.
I find it very hard to see (famous) actors as my favorite game characters.
Maybe they can solve it by having totally unknown characters, so nobody will care about how they look.
Chronicles of Narnia came to my mind when I thought about Tauren etc. The creatures there were pretty amazing. Half life-action, half CGI I think.
I hope they decide to make it 100% CGI!