Sounds like we are at least a few years away from the reintroduction of the Big12 title game. Membership seems against it which is a real head scratcher. If the Big12 was snubbed again I think it would have sped up the process but Oklahoma's inclusion this year will likely give the championship game nay-sayers all the ammunition they need for the next 365 days.
Sounds like they also require the NCAA making some exceptions to the rules to reintroduce the title game. That or the expansion back to 12 teams.
The question there is: who are the logical candidates to move to big12?
Nebraska and A&M sure as hell aren't coming back anytime soon. Current members of SEC west in no hurry to leave, though honestly a team like LSU would do much better in Big12 and still fits within the geographic theme (excluding West Virginia who was essentially desperate for whoever would take them following the collapse of the Big East.)
So, who do you think would potentially benefit and desire joining the big12? Who has the chops to play in a power 5? I don't see any member of a current power 5 moving there so it essentially comes down to top mid major teams.
My thoughts are:
Houston
BYU
Western Kentucky
Boise State
Boise and BYU are a bit of a stretch geographically but I don't really think that matters.
Houston and WKU (to a lesser extent) would be nice additions that would add to the idea that the Big12s top teams are these run and gun teams that like to get into shootouts. I think they would be a good fit.
Steps to success
1. Add Houston and BYU.
2. Bring back championship game
3. Stop scheduling such garbage OOC games (though this could be said for 75% of power conference teams)
4. Profits