I have only seen one fight were I noticed some Judo throws, there defanitly is some knowlege in judo that could be useful. But Judo is not going to change the world of MMA. The reason that Royce got out classed by Matt was he allowed he did not fight any good fighters before he fough Matt. Given a couple of warm ups or tomato cans as you might say, he would have done better. I still dont think he could have won but it would have been closer.
Will that samething every happen to Matt - No, Matt is a student of MMA, look how he improved since he got be by BJ. I also dont think Matt will retier and then come back.