If there's any direction that TUF needs to take, it's with regard to their selection of fighters to bring on the show. Don't get me wrong, I really like the cast this season, but my main issue is that all of them are so inexperienced.
Before TUF, Bonnar and Griffin had a lot more experience. They were kind of nomadic fighters going from organization to organization, without a real home to show off what they were capable of. THESE are the kinds of fighters that really should be fighting for contracts on the show, every fighter in the TUF house should be similar in that sense, that way we can see more technical fights, and guys that haven't had luck with their careers could have the opportunity to get back on their feet.
I think that most of the fighters on TUF7 really should have to work their way around smaller shows more, such as King of the Cage, etc. There are exceptions such as Tim Credeur, he's an example of what there should be more of, IMO.