I don't think MMA will get substantially better, but the talent pool will get deeper over the next 5-10 years. I do however think there will be some MMA guy who makes the breakthrough and becomes the sport's equivalent of an Ali or Tyson in terms of popularity and recognition in the mainstream American media. Sadly, he'll likely have to be an American (or at least an English speaking) heavyweight version of Fedor for it to happen, but I think it will eventually. If Lance Armstrong can transcend cycling and be (almost) universally recognized as a great athlete, somebody should be able to do it in MMA.