i actually enjoyed it quite a bit in ufc 2 despite not being able to choose how to advance your character. you could of course pick moves from your cards to build out how you wanted, but you always got random attribute cards which would usually take away from the same few things (subD or r leg power).
ufc 3 gives you so few slots to even put many moves on, your left with very little in terms of variety. just look at what gold moves people put on their 6-7 striking slots for cafs: jab, cross, hooks, uppers, maybe a roundhouse kick and a haymaker. basic punches and kicks. so little variety. Which in itself is strange because without many slots there isn't much incentive to keep buying tons of packs except to unlock champions and slowly upgrade a couple things. every decision this year for UT has been totally baffling to me.
Even if you had all lvl 5 moves in ufc 2, at level 60 you had 252 stars available, so you could put 50! moves on. now? less than half that. 15 for a gold fighter? maybe what 20 for a 5star? plus a bunch of boost slots...
next year, i'm hoping for a system based on your playing, like oblivion. so if you use a skill a lot, you get exp towards that attribute. moves could still be linked to cards but have less attribute value per card, make it more about building the character than plopping on a bunch of high level cards.