From my little FIFA 09 experience, i can say a few words about this.
1) Too much centralized game play. Unless u really intend to go to the wings, u will seldom find an automatic wing attack. Again, robinho is one of the worst header.
2) Due to the overdone ball physics(ridiculous receiving) u will find it difficult to pass, dribble, roaming around to find gaps and mostly to receive through balls and chip through. Me and Killer having a lot of prob due to this rubbish ball control as our gameplay mainly depends on ball control and through ball.
3) No defense against wing play what so ever. Even if u draw your defensive mids in the wing, still a good side changing long pass or some roaming can create great opportunities for your opponent to deliver some deadly cross.
4) You must make subs.
5)No IMBA striker. there is no Torres, eto'o, CRon, Rooney. And Kaka's speed is not as good as it is in real life (I play kaka in attacking mid though)
6) No good LB. As im a fan of Dani Alves in front of maicon, i have to trust on gilberto silva/rafinha for LB.