One of the scenarios being rumored is that WSU and OSU could be added as football only members to the B12, or possibly a rebuilt and expanded ACC. This actually makes sense to me.
Without question, power conference level football is eventually going to break off from the other sports on campuses. If WSU were to grab a seat in one of the conferences as a football only member and maybe join up with the WCC as a full-time member in all of the other sports, it would be the model of the future. I expect that even UW, Oregon, Stanford, Cal, and the LA schools will eventually move to a similar model for their Olympic sports.