IMO SA are responsible rather for frequency of plays than their quality. For example, SA "playmaker" means that player will more often get the ball and try to do a key through pass to forwards/wingers. If I'm right, SA are almost useless in comparison to standard allocate points. Player of value 20 without SA will play more flexible; player of the same value with SA will often try to do his "best action" (e.g. shoot from distance), so it's better not to assign SA and spend points on skills. The one and only situation when SA work fine is when your player has a significant advantage over his opponent. SA works then as a slight bonus for actions of that type and your player does it often and (because of advantage in key skills for that action) does it well. You know, AML of v 23 with SA "dribble" playing against DR of v 20 will always be a serious threat.