Best case scenario (10000000x better than us joining Big 12) is OU getting pissed and leaving the Big 12. Would cause such a seismic reconstruction of conferences that we'd end up in P5 for sure.
I can think of a much better/bigger scenario.
1. UConn joins the B12 as constituted now and it stays together.
2. UConn surpasses BC and Syracuse in football and it starts grabbing recruits from New England and New York that would formerly go to BC or Cuse.
3. UConn makes itself into a bonafide P5 school, and by the time the other contracts are up in other conferences, UConn becomes a much wanted property.
Otherwise, say Oklahoma and Kansas leave for the B1G (Frank the Tank's scenario). Texas goes ACC or Pac10 with maybe Texas Tech.
Or to the ACC.
UConn then is fighting to stay relevant by joining up with Kansas St., Iowa St., Baylor, TCU, West Virginia, Oklahoma St. This B12 wants to add 6 teams, and they are looking at Cincy, SMU, Houston, BYU, Colorado St., Boise St., San Diego St., UCF, USF, East Carolina, Tulane, Memphis and UConn.
Only 6 teams get in. BYU is a definite. So make that 5.