on a serious note, it would be great for boxing. I don't watch the UFC but apparently the best always fights the best(I could be wrong so don't quote me on that). There are just too many bull**** belts, there should be one champ per division, and everyone should be gunning for that belt which would force the best to fight.
It could be great but I think Haymon will be far the most controlling promoter out of any of them. I think he'll have a massive say even in things like how he wants them to fight referees and his matchmaking will be so careful. That's the only worry but having all the fighters on one card would he fantastic