XFL and USFL will play a role in the next 5-10 years.

It wouldn't surprise me if one or both of the leagues decide to let HS graduates ... 18+ year olds play. As HS players gain more notoriety, it seems inevitable that the San Antonio Brahms take some 5 star bling, bling QB from Houston, or the Vegas Vipers entice a high profile kid from Bishop Gorman to play "locally". It is possible that they become a default "minor league" offering an alternative to the college life for kids who just want to play ball.

Will they shift their schedules from the spring? Maybe play mid-week in the fall for TV contracts - so you have football 7 days a week in the fall? Seems plausible to me.

I think CFB boosters will keep CFB alive, if not thrive, but I think there will be some new competition / alternatives for players.