whatithink
GOLD
It won't happen, just because you say so. It never happened previously so there's zero reason to think it will now.This is what WILL happen if clubs switch to SY. You can try to stop the madness by defining a cutoff date like Aug 1st. But over time it won't matter and different leagues will do SY only without a cutoff date because it's just easier to implement.
I do know parents who started their kids late or made them repeat 8th grade, but that was all to do with HS sports, never club. I've even seen parents pick a small HS for their kids because they'd likely make the team but in a bigger one they might not. None of these kids are elite and there are not enough of them for any club or org to twist a system to suit them.