The Big 12 can expand, and OU can still entertain offers of leaving in 8 years when the GOR is up.
But an expanded conference certainly means a new GoR. The ACC GoR is 20 years. Big12 newbies will want the same. You
might get away with fifteen. Changing conferences is a huge deal, who is going to do it for eight years? Less really, because as you near the end of the GoR the exposure diminishes. So five years and you are back on the market as damaged goods? That's nuts.
The Big12 is the ugly duckling of the Power 5. Even after we add, we're still the ugly duckling on paper but we can narrow the gap on TV $.* The immediate issue now is whether the chronic fatigue of Big12 insecurity makes someone crack, especially if the expansion search is protracted. I think some Big12 admins are feeling it and some school(s) who feels it could find a nice, secure B1G/SEC/ACC/Pac12(?) landing spot is on the hotline, just like they have been for years, exploring options. Realistically only OU, UT and maybe KU have that kind of mojo. Part of me doesn't see it happening but you know calls are being made with that little bit of extra urgency. And if calls are being made, anything can happen.
I say go big and get four teams - BYU, Colo St., Cinci/Memphis and UConn. UConn is really a geographic bridge-too-far, so maybe swap Memphis but I just like UConn better. East coast markets and all that (but is that all it's cracked up to be? It's disputed). Probably the best mix of academics, new markets, football and hoops and profile schools. And no directionals - it makes a difference in perception and if I had a dime for every time the word "perception" has been used by Boren/media in bemoaning the state of our conference... WVU gets two eastern friends and BYU has a buddy out west. Too spread out? Yes. Not perfect but no combo will be.
*The Pac12 Network is substantially under performing and the format/distribution sounds like a mess. The Big12 can have the better network if we do it right. And if we do, hey, we finally look like we have our poop together, we're not the ugly duckling anymore and recruiting improves. One thing is for sure, the conference has to demand that UT drop their network if we hope to maximize what expansion can bring. I know UT says it is here to stay but we won't have this leverage again. Lots of luck with that though. It makes we wonder if they start to eye the Pac12, which could conceivably let them keep the network, at least in some form.