What are your opinions on the Striker abilities?
I'm not sure, if Freekick specialist only changes how the ball flies (curved or straight) and not changes the outcome, but at the same time I've never seen One-on-one scorer (& -stopper) in action at all.
I once heard that One-on-one scorer is supposed to help score more counter attacks, but I don't know how true that is, since the sign never pops up in-game.