Roko hasn't played all that well actually. He had a terrible, terrible game against Argentina and he hasn't done anything to make me scream, wow, what a player. I still think he's learning the limits of his game and what he can and can't do.
It could just be, that he has brutal coach on the Croatian side (a coach I dislike) and isn't using him properly. Maybe Smitch will know how to use him? Or being beside a guy like Jose will help develop his game even further.