biggest stadium in football, good team this year which was way earlier than expected for jumping to the big 12, generally a solid team against whatever competition over the last 50 years, and since there isn’t a blue blood in football in the big 12 anymore no other school is an obvious choice. there’s other contenders too but BYU would have to be the favorite.
plus basketball is solid and has good support too so that would be a good fit as well.