Unless a large majority of your WoW time is spent doing the /dance emote, I don't see why people want to see the worgen dances so bad. I don't judge whether or not I'll roll a race/gender because of their dance. (Though I have always wanted a male b'elf for that dance... It's hilarious.)
I thought people would be more concerned with the outcome of the models, not the dances.
... And now that I think about someone *will* tell me that half their WoW time is spent dancing, just to try and prove me wrong somehow. Well, that'd be just sad, and a waste of money if you ask me.