The major sanctioning bodies
The major sanctioning bodies are the Athletic Committees from each state, like you said, but it’s the fact that their are SO MANY organizations out there that there’s no way of sorting out the mess unless you REALLY follow the sport. With the UFC even the average fan can turn on to Spike during an event and have Mike Goldberg and Joe Rogan catch you up on who these fighters are and their contender status.
There will always be a need/use for local shows, and I was hoping WEC would be a home for up-and-comers and fighters trying to rebound, but this is still a step in the right direction.
I would argue that we still need a few more weight classes, too. 163, 178, and split heavyweight into 206-230 and 230 and up