I ran things similar in Allaria and Rising Stars, a bleach RP. It worked really well, as it made people work together in groups, instead of sending them off to different areas on their own. One guy tried to go to the human world alone. 

I think this idea would work really well here with proper backing. The set up isn't hard, I believe the hardest issue will be character acceptance. That has always been a sticking point for any incarnation.