It's different, and the team concept gives a new direction to MMA. Sure, MMA is a combat sport that involves 2 men trying to beat one another, but the IFL has the team mentality encoded in it. I dig it, and I think it'll be around for a while.
I also really dig the whole "Who's going to be the next coach?" ordeal. It's really cool to see former favorites try their hand at giving a team direction.