Some so try out:
4-1-2-1-2
*the players are fine, but you might want to get a better striker to partner with gamerio, like carlos teves or steven jotevic, and a center midfielder too, because bodmer is old
4-2-3-1
*get a better center midfielder, attacking playmaker type. look out for Ruben Y. Jenssen.
4-3-3 DM
*New forward, but find one thats like a speedster. for me I had Kevin mirallas.
also try getting a young striker, like sanogo, mbaye niang, carlos fierro, vaclav kadlec, etc.
Nene will be aging soon, so fancy getting a Left winger to replace him. look out for marko marin,
Eugene Konoplyanka or angel di maria, who gets transfer listed in the second season.