So you're fine with the defensive side of the gameplay? The player switching is still as bad as it's ever been (they haven't fixed this in the past 3 editions of the game), the GK AI is very poor (goalkeeper rush doesn't even work in some circumstances and on the whole it's pretty poorly implemented). The CPU GK AI is superhuman, saving the majority of shots from short range and long range - leaving you with a very limited range of attack - it makes you wonder why most goals are scored from cutback tap-ins and crossed headers. The CPU continually presses you the majority of the match on anything above Professional difficulty, and gets away with murder with their persistent fouling. It's cheating, and you would not get away with it when playing against another human, so why against the CPU?
The AI needs a complete rework if you ask me. Tweaking obviously hasn't done the trick and they've had 3 attempts at it already. They need to take it back to the drawing board. They've done a fantastic job on the offensive side of the game, but overall the gameplay for me is severely let down by the issues in defence. After all if you can't control your defence properly, it becomes a game of who can score the most rather than a proper game of football.
I say they still need to concentrate on the gameplay; they're halfway there and it's a LOT better than 09, but there's still a way to go before it's as perfect as some people on here seem to think it is.