There is one fix im hoping they have with this game (playing on PC). In career mode (In Fifa 14 at least) whenever I scout youth players, no matter how highly touted they are or how good their rating is when i eventually sign them to the senior squad, always seem to be really really slow. regardless of position.
For example, i'll be taking a League 2 team and I want to work my way up to Premier League. I'll buy the best scouts (ive kinda cheated a bit on this part in recent career modes ive done), and find players who's overall is either around or higher than the overall of my current starters (typically high 50s/low 60s) when i sign them to my main squad. But they'll have a sprint speed of like 52, even if they are a winger or something like that.
I heard that physical skills grow later on for youth players, but that makes little sense to me. I get that players get stronger, more durable, etc etc as they mature but when it comes to raw speed, i don't think many athletes go from super slow to super fast from the time they are 18 to when they are 24.
Not a huge deal, but i find it a bit annoying.