The thing is that, from what I've seen, it looks more like mutilating rather than fun. Kind of like if you went to some random forum that deals with real life and started a discussion along the lines wouldn't it be cool to put lizard tails on humans? I mean, ok, that is a bit of a cool idea, but I think I'd rather keep tails on lizards than humans.
They will probably introduce new races with certain features you might have mentioned because after all, this is a fantasy.
Now whether they should make new races or work on the existing ones is for another discussion that is going on atm.

EDIT: If you want to play a race with a tail, choose a race with a tail. I like elven ears but I don't think I'd add them on my Au Ra. Just doesn't fit. Tails don't fit Roes either.