Just an idea that would help IMO.
Especially young kids. Need to pay dues in Frosh and Soph years and work hard (football and class).
Jumping from team to team multiple times makes it hard for coaches.
I'd probably be OK with jumping down to juco early though in the first 2 years. Some kids might not be able to make it, but I'd make them stick at the juco for 2 years.