If HD had a JUCO division, run the season slightly behind regular HD. When recruiting was going on at the College level, new Coach signup would be on at JUCO. Exhibitions, JUCO recruiting is on. Season for the JUCO would run roughly the same, but you couldn't have a 64 team playoff tree....unless you did away with Conference Tourney and made the National Tourney all at large.
Would really make recruiting interesting, and you would have a TON of one and done guys. Plenty of JUCO's still exist, but you could also use some of the Post High School Prep programs who recruit heavily on the national level (Fork Union, Oak Hill, etc). I think it would be a neat idea. I made a similar suggestion in GD about five years ago. It stems from my actual past. When I was growing up in West Virginia, Beckley College was a 2 year Junior College that was a fully participating member of the WVIAC. They had some really good teams, and had players recruited on a National Level.
Chased alot of squirrels, but back on point I like the idea!