I have to admit that I am already bored of Be A Pro, loved it in RC3 and unfortunately it feels like the same experience, but I do have a few ideas.
Firstly when starting a new pro. You should choice either to be a forward or a back. not the exact position. The reason for this a young players position is open. playing a different position in your first year will keep things fresh.
Your first few games should be from the bench. As all players first games are, adds pressure to make an impact.