Variety of competitions at a variety of shows under different sanctioning bodies is essential for a fighters development. I have had the misfortune of being in a position where it was a single overseeing body, said body was close with a fight team. That fight team had "closed door weigh ins" and I fought someone 2 weight classes up, but we supposidly weighed in the same. Unless the state regulates everything there is too high of a chance of conflicting interests