As an orc, I'm hoping for something in between Thrall's model and Garrosh's 5.4 model. I don't necessarily want to be as roided out and hunched like Garrosh, but I don't want my back to be as straight as Thrall's. And please, please have animated hair and facial hair. I want my enormous braided goatee to bounce around.
My tauren and blood elf alts wouldn't mind some love either. I like my tauren's hump, so I hope they keep that, but the mane and fur in general could be a lot better. A more expressive face wouldn't hurt either. My blood elf looks okay as is, but I think his proportions are a little off. Blood elves should be slimmer, in my opinion.