I really think if Boise leaves the MW, the AAC needs to strike quickly, add a few teams go to a 16 conference that looks like this:
AAC East
USF, ucf, Cincy, Temp, ECU, NAVY, APP State, and Army
AAC West
Memphis, SMU, Tulane, Houston, Tulsa, BSU, Colorado St,and AF
Play 7 games in your division, 2 cross over games, and then you have 3 OOC games.