I'd say as long as they had a way to avoid abuse and have a legit Reps, then it'd be badass..

I can imagine some title that you'd have by or under your avatar based on your rep (kinda like how the post count thing used to work)

Maybe..

Ban me please
Loser (I think that ones a given)
Member
Super Member

I dunno.. just throwing out some suggestions of Possible Reps..

And maybe have a "Favored Member" group/rep

ehh I dunno, can't think right now