One other things to be aware of on the MWC front: two teams are sometimes at risk of falling below the FBS attendance minimums: Wyoming and Utah State. Utah State has actually fallen below the required 15,000 season average, and Wyoming has hovered just above it for a long time as well. (Wyoming was falling below it in the early 2000s until the NCAA changed it to allow turnstile OR paid tickets).
Truth be told, if the P4 conferences really do break away, they'll be fine, but if the structure remains similar to today with 130 schools trying to play FBS football, there are 15-20 schools in FBS that should probably drop to FCS.
This is going to be very hard to take for a lot of fan bases but I see an eventual complete re-organization of college football based almost entirely on the financial capacity and willingness of the schools involved to keep up with the arms race we are seeing in facilities and coaching and even more so in athletes being paid in excess of tuition books room and board.
We will see a top tier, mostly schools in the Southeast and Midwest plus a few coastal schools (USC, Oregon, Washington) who become essentially a professional football organization. 25-40 programs.
Next tier will be most of the rest of the current P5 plus a few top G5 schools who are willing to step up to the second level. 40-60 programs
The rest of G5 plus the top of FCS goes to the next level playing on a regional basis with more modest budgets. 40-80 programs.
Then what is mostly current D2 plus some current FCS schools dropping down for lower budgets as well.
A lot of schools will initially try their hands at playing a level higher than they are willing or able to fund but will eventually be forced to drop down to a more reasonable level. With the media attention (and revenue) focused on the higher levels schools will see that their return on investment isn't justified and drop down. We will also see some schools drop football all together.
A school like Wyoming is going to be stuck in this scenario. Their fans are rabid and faithful but there simply are not enough of them. They can't generate the money needed from ticket sales. With the move away from fossil fuels the economic boost provided by energy is fading so both taxes and donations are declining and not likely coming back anytime soon.
Wyoming (and likely Utah State and many others) would probably be much better off being big fish in the FCS level rather than marginal at best at the bottom of G5 and left behind as their conference mates head off other directions.
They would be much better off competing on an even basis with the schools from neighboring Montana, the Dakotas, etc.