Thinking about the best case scenario within the worst case scenario (that ISU doesn't latch on elsewhere).
Say all 8 teams stick together as no other league expands. The most valuable addition options are probably BYU, Houston, Cincinnati, and UCF. Say that we get all of them (BYU would not be sure thing to join this league).
Iowa State would be in a Big 12 East with TCU, Houston, Cincinnati, UCF, and West Virginia, with a protected crossover rivalry against K-State. The West Division includes Baylor, Texas Tech, Oklahoma State, Kansas, K-State, and BYU. Other than K-State, we'd play 3 of those 5 teams every year in football.
I wonder how much money that league is worth. It is not a great league by any means. But it is hard to see a much better outcome available if the B1G, Pac-12, and ACC are all off the table.
It is imperative that JP and WW get this university into one of those three conferences.