Sounds like a great way to promote new season tickets. Preview your seats for 2017. I think most people would be jonesing for some real college football in April.
The first year is a transition year, but once the season ticket holders (new and renewals) are rolled in year two you could easily expect 20,000+ (paid) tickets for a game like this. I suppose it is not much different than the NFL requiring season ticket holders to buy the two preseason home games every year.
I agree we are probably on the fringe for this to make money for us, but for teams like Bama, FL, FSU, Clemson, Ohio State, etc. it would still be a huge money maker for them.
We could always schedule a payday game in the fall to offset any losses if the end goal here is to play more P5 opponents.