Gert Funck it's a good idea but not in all aspects. If you need to have a Yought Team you need to make a league for this team also, making a league you need to make a Super League and a Champions League. It will be same as the first team, but with young players.
There is already the Shop where you can take all kind of players. Talking about youngster academy yeah, it's different. I think that the academy should be changed, but there is not need to add a new league and other stuff for the youngsters.