I get exactly how it happened, doesn't mean it makes sense. In basketball, schools from the top of Division I to the bottom of D4 would play between 8-12 players per non-blowout game. Yes, a school like St. Ignatius has a lot more to pick from to get that 8-12 than Ashtabula St. Paul, but in either case you need a dozen kids.
Football, you have some teams playing up to 50 kids in a normal game on the top end, to 15 on the bottom end.
When you have discrepancies like that, regardless of number of teams or CB numbers, it's silly that a school like Avon Lake can be big enough for D2 in football, but is D3 in basketball. Well, seeing how much tougher D3 in basketball will be, Avon Lake probably wishes it was also D2 in basketball.
Back to what I put above, this move was all about creating divisions to give large (but not too large) suburban publics and small town rural publics annual state title opportunities. I guess that's OK, but waters it down especially since it doesn't look like these new divisions have done much outside creating 3 meat grinders (1/3/5 ... at least at the top of 5), 3 whatever divisions (2/6/7) and one that looks like an interesting mix of urban/suburban/rural/public/private (4)