Strange.
With these soon-to-be large conferences, I predict one day there will be just ONE, GIANT, BIG CONFERENCE with all schools in the country as a member. And that conference will be broken down into several divisions...most likely by geographic region. For example, we can call one division the Pacific Division for the schools on the west coast. We can call the division in the deep south something like the Southeast Division; out east they can be the East Division, and/or the Atlantic Division. We could even give the divisions a number based on how many teams are in the division...like "8", "10", or "12"...we could even throw a fancy word in front of that to give it a little flare, like "Grand", "Large", or "Giant". Also, each division can even have sub-divisions that break things down a little further.
The teams in each division will play against each other all season...and may even play a few games outside their sub-division, however they are allowed to play about 3-4 games outside of their division at schools supposedly below their talent level in hopes of pocketing some extra, joyless wins. Then at the end of the year the teams with the best record in each sub-division will play against each other to decide the division champ.
At the end of the regular season, a group of people can take a look at all of the divisions winners and see who is worthy of a post-season tournament. It may be hard to decide which teams to choose so they will most likely have to select based on the teams overall TV ratings, media bias, how many 5-star players each team has, or any school in the Southeast Division wether they have won their division or not.
NOTE: There may even be some universities that deem themselves too fancy to join the great conference and choose to remain "independent", but that is okay, they can hop around from division to division to chase some extra revenue or if they start to feel left out.