Denver (CSU), Las Vegas (UNLV) and San Diego (SDSU) are big market programs along w/BYU and that would give the AAC a huge footprint coast to coast. In fairness, it would need to be split between east and west. But it would make sense.
Oh and please stop with Boysenberry State. Its Idaho, market irrelevance, brings nothing to the table except currently competitive programs. It plays in a small, iddly shaped stadium on smurf turf. It has no place at any big boy table until it stops looking academically and by facility like a junior college. You don't match up an MIT and CalTech with ITT Trade School in the same league.