Played a few games today.
I am going to only state the positives that I feel

(we all know the negatives).
I am feeling alot more freedom overall. When you collide with players and fall over, the players seem to get up quicker and become controllable alot more than before. One of my huge gripes with Fifa is when you fall over it takes an age to get up and challenge for the ball again. This on Fifa 11 seems to have been imprived alot imo.
Also I am feeling more weight on the players? when you are sprinting one way and the opposition player turns, it is harder to redirect the player because of the momentum of your player.
I really like the sliding tackles. But I need to use them less as I keep getting players sent off. Some of the refs decisions seem overly strict. But this could be due to the refs I got.
Shooting feels much nicer. I have done some nice low powerful shots and a couple of screamers hitting the bar. Still haven't scored from open play yet as I haven't played fifa for ages and playng full manual on world class.
Still got to play alot more games, but overall at the moment I am happy