nope, never change mentality. the amc should be pacey with good finishing, dribbling, composure, passing and first touch. much as a poacher should be, except for the passing. mc's should be similar, but with less focus on finishing and more focus on creating, such as passing, creativity, decisions, tecnique, first touch. dmc's need to be all round players, need to defend well but be good on the ball too, so anticipation, tackling, heading, passing, teamwork, work rate, positioning. wb's are very offensive, so the better offensive attributes the better, however they must be able to defend too! tackling, positioning, anticipation, passing and work rate are essential, and creativity, dribbling, finishing crossing are definate plusses. cb's should be good at passing, anticipation, positioning, tackling, heading, marking. you should also try to get fast defenders with composure and concentration because the defense is put under some pressure during large periods of the game. for all positions passing, decisions and work rate are very importante, not essential, but will help a lot! hope this helps
Cheers, really apreciate it!