A nice thing I noticed if that sometimes Playmaker players take freekicks even if they don't top the assigned orders in freekicks,
but if they do then they pass/give the ball to players that have Freekick ability (and in this case they often score).
This occurrence has nothing to do with the SA. When another player takes the freekick, the assigned freekick taker makes a curtain goal, and the freekick taker is credited for it, the assister not. It is kind of a bug in the animations.