Selfishly would love to have a team from Colorado back in the Big12 so I could see some ISU football and basketball more easily!
Financially it just makes no sense to add CSU. The state of Colorado is a good sports market for eyeballs, but it really is a pro sports state, and most of that pro sport love is dedicated to the Broncos, everyone else is second fiddle. CSU has a lot of alumni on the front range, but not many seem to care much about the sports teams, and I don't think they draw a ton of people to the games. CU is the team that gets all the bandwagon fans, and they don't even get a ton of hype on the northern front range, who knows maybe it's different down in Denver. Ft Collins is a really cool place, but I just can't see anybody in the conference clamoring to extend an invite to CSU, unless the Big12 as we know it implodes and we need to scramble to bring in members.