I just bought a scout ST with freekick the other day and he has 7 goals in 5 games. I have bought 2 other scouts in my 4 seasons and one was a DC/DR with aerial def, and a GK with 1v1 who was my best player until I got my Scout ST.

I dont know about later levels, but at lower levels, they make a difference: My GK is still the one taking penalties for my team and now has 2 goals.