If that happens and BYU is football school #12, the question is does the BE (a) look to add Memphis and Temple for both sports, thus bringing football to 14 and also upgrading the league's basketball profile (as opposed to NOT adding Memphis and Temple); (b) look to add 2 basketball-only schools or (c) stand pat.
IMHO standing pat is not good enough from a hoops standpoint. Adding Memphis and Temple would seem to be a no-brainer. Both want to come, you still have 2 open spots if the league ever wants to go to 16 (ND and Nova?) and you need to do something to improve the basketball side since none of the incoming teams are remotely in the neighborhood of Pitt, WVU and Syracuse.
If they decide to go basketball only they then need to think really big and go after Gonzaga and Butler.
I never even thought BYU was a major factor anyway. Always talked about BYU/AF.