They just need to make stats matter. Guys like Fitch should be able to hold most guys down and just pound on them; whereas less skilled wrestlers should have problems holding guys down.
That's just a strategy for some fighters, and I don't really see a problem with guys doing it, so long as it's realistic. If I get taken down by Lesnar, I would expect to not get up for the rest of the round unless he pretty much left a huge hold or got up. On the other hand, being able to hold mount on say Nog with Kongo is ridiculous; and being able to get to mount in just 2 moves is even more ridiculous.
I think the ground transitioning system is just completely flawed and needs to be entirely redesigned. I doubt it ever will be, though.