I'm not sold that a new race would use an existing rig, those screenshots are very clearly either the female meta skeleton or female draenei one. But we won't have to wait long to find out.
As for the talent trees, aside from gameplay implications I'd love something like that for nothing else but to bring back the old talent tree art that we used to have, I really enjoyed some of them.
As someone who prefers more masculine stuff I have to say you're really weird.
Its just a video game lol.