Yes I believe that the "clubs" would benefit from holding on to players longer, but is it really a benefit to that top player individually.
My experience has been that the longer a player waits before coming to the premier level team the less likely they are to make that team. I have seen numerous players come to tryouts hoping to make the premier level team end up on the Challenge or Classic and in several instances I believe that had they trained at CESA earlier they would likely be at the premier level.
For example, all year my daugters U-10 team has played the Furman U-11 team. They killed us the first few times. We were lucky to even get the ball on the offensive side of the field. We played them last week very evenly and won 2-1. It is a combination that brings about the advancement; coaching, training, and competition.
