In 2010, at the beginning of the Big 12 missile crisis, there were rumors that there was a group of 6 teams (CU, OU, OSU, UT, TAMU, and TTU) that were minutes away from going to the Pac 10. This was confirmed by OU's Joe Castiglione a few years later.
If we build a hypothetical where that move happened, how would the landscape be different? The PAC is now at 16 teams, and Utah never gets it's call up.
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The remaining 6 Big 12 teams would all be on their own to look for new homes, so let's assume Nebraska gets it's Big 10 invite, BUT Mizzou isn't immediately invited to the SEC since A&M isn't available. The Big 10 also goes ahead and adds Maryland and Rutgers to get into the NYC and DC media markets. So the Big 10 is the same as it is currently, while the SEC is still at their pre-2010 membership.
The ACC is at 11 teams with Maryland out, so they raid the Big East, adding Pitt, Syracuse, and West Virginia, while ND joins as a non-FB member. The ACC holds at 14 in hopes that ND will join as a full member.
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This leaves us with the remnants of the Big 12 and Big East. The remaining 5 Big 12 schools join up with Louisville, Cinci, and USF from the Big East. Along with that they invite UCF, Houston, TCU, SMU, Utah, and BYU.
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This would have been a better case scenario. If the SEC or Big 10 has decided to invite KU and Mizzou, that would have left ISU, KSU, and Baylor on the outside looking in. With the way things turned out in reality, the Cyclones have benefitted immensely and aren't likely to be on the outside.