I didn't catch all of their show, but what I heard was interesting. Personally, My #1 pick would be Notre Dame---by a mile. They're within our geographical footprint, are a 10/10 in tradition and close to that in academics. I also would propose that we issue them an ultimatum: Don't join Big 10 this time, don't expect to play any of our members during the regular season. This may penalize Purdue, Michigan and MSU (lose top notch out of conference opponent=makes fans happy), but they're going to be picking up a new worthy matchup with the new conference member.
Steve brought up Nebraska as a possibility, and as they discussed it they came up with a lot of positives. However, I think they were somewhat presumptuous in thinking the Cornhuskers would want to join the Big 10. Financially it's gotta be a positive for them, but Nebraska has tremendous tradition and I think it would be nearly impossible for they and their fans to part with that. I'd love Nebraska personally--wouldn't bring a lot of TV eyeballs but they'd bring some shine to the brand name.
Missouri: my last choice. My perception of them is second rate academics and less than honorable coaching and administration. I can't back this up with facts or research, just my built-in gut feel for years--but that counts for something. Would much rather see Rutgers or Pittsburgh than Missou.