The service academies may opt out. Army has already said they aren't interested -- which is why they are never mentioned. If Air Force joins, the Navy probably will too -- but that is still very much up in the air:
http://www.gazette.com/sports/names-...-thompson.html
Without Navy, the BE East would be the five remaining members plus Central Florida, and then you'll have the Far East composed of teams west of the Mississippi. Houston, Boise, SMU, and then pick 3: BYU, SDSU, Nevada, Fresno, Tulsa, Colorado State, Wyoming.
But of course, if UConn, Rutgers, Lousiville and Cincy all depart for greener ACC/B12 pastures, then maybe there will be yet another round of "expansion". In five years, the New New New Big East might look like this:
East: ECU, SF, CF, Southern Miss, Southern Methodist, Houston (but West Virginia would make it all directional)
Far East: SDSU, Fresno, BYU, Boise, Colorado State, Wyoming.
Maybe Tulane and Rice can get in the next time