Bunny girls never need any proper reason to be there. That is the advantage of the bunny girl.
That being said, I'd so make a bunny girl, mainly cuz they're even sexier than catgirls, which is an incredibly difficult feat to accomplish to begin with.
Also, I've always thought that if SE really wanted to do true PvP, then they'd have to open up the Beastmen as playable. That also being said, I know that'd never happen, so I just enjoy a good Ballista game or two.