I think special abilities come out only in roles a player can adapt to.
You may tell, free kick specialists can always strike a free kick.
But if wrong roles give you a possession penalty, you risk to have no weapons for you and concede all to opponent.One lower player in its role does not strongly reduce team performance, a strong player in wrong position makes disasters.So...

Inviato dal mio LG-H340n utilizzando Tapatalk