I think this all boils down to who the PAC 10 invites as their final team. If Baylor, the TX schools may go no matter what NU does. If CU gets the invite, the BigXII will pretty much stay the same.
Will be interesting to see, if CU is picked, whether CU is still welcome by the PAC10 when the TX schools stay in the BigXII.
CU, you can only come if you hot friends come too.