The point has been made about the shallow talent pool in the HW division, and this is very true. But on the other hand, I think if they did make a 225 class, you would have a good amount of the VERY stacked LHW move there.
Forrest if he weren't champ,
And many others I'm sure, but I've heard that all these guys walk around well over 230
Leaving the 225+ Class to guys like Kongo, Lesnar, Herring, Nog, Mir, and so forth.
So I think it would be a good move. I also think it would allow for more title fight main events. It seems like about every 3rd or 4th UFC these days has a non title fight main event. I'm guessing to give champions time off since they've been doing events all most monthly or even every three weeks. With one more belt, you could really cut down on the non title main events.
Anyway, those are my thoughts