I like that. Something to incentivize longevity has to be helpful to the game. I’m sure there is some restraint of trade issues there, too, though.I think changing the eligibility rules would be better.
You get 5 years of eligibility to play 4 seasons.
If you stay at a school for 3 years, you get to play for 2 more seasons (either at same school or a different one)
If you stay for a 4th year at the same school, you still get 2 more season to play anywhere.