Cesc is, offensively at least, having the season of his life. In this formation he is not supposed to drop as deep as he did in a 4-4-2, but rather get the ball higher up the pitch where he can do more damage. (Goals and assists). You can´t have both. No way is Cesc EVER going to have the kind of impact regarding goals and assists as he has had this year if he is also supposed to dictate play as much as he used to. I do agree with you though that Cesc needs to play as a midfielder and not as a 2nd striker, which he has looked like since we lost RVP more or less. This mainly for defensive purposes though.