the thing that messed with me about EA MMA was the fact that every fighter has pretty much the same skillset, there's like 6 different strikes in the game. Atleast in UFC there are a bunch of different type of every strike. It makes it feel a little more realistic, and I also love the rosters on the UFC Games.
That is probably my next complaint, I don't think that would be a difficult fix either. A few new animations for each strike, tweak the speed/damage of each type to suit the style... away they go.
It still felt like a much more fluid game, unlike "UFC rock-em-sock-em robots."