There’s very little talk about this, but SMU would be a good add, I think. Hear me out. They are in the middle of the 4th biggest TV market in the U.S. (DFW). They have a small, but rabid and wealthy fan and donor base. Unlike LA, Seattle, and New Jersey, DFW is also a major market that is college football crazy and Dallas proper would go nuts having 6 Big Ten teams in town every season. Existing Big Ten alums alone would sell out SMU’s stadium every week and they can add on to the stadium. The stadium is in the heart of Dallas and close to tons of great bars, restaurants, hotels, etc. Academics and research are decent and would get better. SMU has a legitimate college football history with a Heisman winner and some legit success in the Pony Express era (by doing mostly what would be legal today). (Houston is another possibility but it is more of a commuter school, but heck add them too.) And they have been pretty darn good team the past five years.
Most importantly, it gets the Big Ten a foothold to recruit Texas more effectively. It is pretty insane that the Big Ten can succeed as it has with no teams in the three 3 largest recruiting states by far: Texas, California, Florida, and no presence in the South where tons of talent resides. How long is that sustainable? High school football in California is on the decline.
And, you get them cheap. SMU is so jealous of TCU being in the Big 12 that they would leap at the chance to join the Big 10 with a 40% team revenue share or even less. Allow them to build up from there based on performance, attendance, academic improvements, larger stadium, etc.
Throw Oregon and UW in there and you could have a western “pod” with the four West Coast schools, SMU, Nebraska, with our designated cross overs against Iowa and Minnesota? Heck yes!
If Wake Forest and Boston College can be in the ACC, the Big Ten could handle SMU.