Targets the Big Ten Should go after (assuming SEC schools aren't leaving):
1) Texas
2) Notre Dame
3) FSU
4) GA Tech
5) UNC
6) Oklahoma
7) Kansas
8) USF (some might say UCF here, but the academics (particularly programs and rankings) approach relevance at USF, not so much at UCF).
9) Colorado
There's no combination of two schools in there that ends up disappointing. Even a mix of USF and Colorado has an enormous alumni presence ensuring acceptability. I live in South Florida. A ton of big ten transplants down here.
Texas and Notre Dame are the no-brainer two big fish. I don't see a whole lot of cultural fit with FSU, but as part of the ACC and their location in Florida there is some strategic worth. That said, they are pretty far away from population hubs in Florida. Not a whole lot of transplants near them. Tremendous brand for football though.
GA Tech and UNC have some pretty solid strategic value and cultural fit (particularly GA Tech). GA Tech also has the Atlanta market, where again there is a sizable big ten alumni presence.
Oklahoma - Great football brand. Not so great at everything else.
Kansas - Great Basketball brand. Not so good at everything else.
USF doesn't have the academic profile you'd normally like to see, but its up and coming academically. They have some solid programs in a place (Tampa) littered with big ten alumni. Phenomenal recruiting ground. If they can improve the academic reputation (the programs are actually pretty solid), they might be a sneaky good fit.
Colorado is an institutional fit, but from a football perspective, doesn't move the needle too much. Decent market, but not great recruiting ground. Decent alumni connection.