Not sure JB would succeed coaching D1. I think the DT payday is his only reason for reconsidering - he sees the payday.
He would need a unique setup like DT got at OK State - had history, RTC, money. Kind of plug and play situation. Only Iowa and PSU offer the same. RU would keep him in state but he'd have to build the program. RU is not a good fit for the B10, maybe better in ACC so be tough job for JB.
I think he'd be better off running his camps, do media, some sort of business.