Honestly they are going to the mountain west and adding teams like Oregon state and Washington will make it a decent conference. Not a great one but still pretty decent
In early 00s MWC was REALLY solid when Utah and TCU were playing great. BSU was great back then too but didn't join MWC until Utah/TCU were out the door. Top of MWC was not only better than Big East, but better than ACC some of those years.
With Utah/BYU both in a major conference (maybe not Utah, we'll see for sure), the region is way more represented than it used to be, but I could still see mountain teams improving to the point where they easily eclipse AAC/Sun Belt as the best non power conference...especially because AAC was weakened a lot by B12.
If Utah does lose at musical chairs the MWC certainly has a flagship team back since BSU has faded from their best years.