I don't miss the Big 12 as a whole, but I certainly do miss our old Big 8 brethren...especially Oklahoma! Not only was that game just pure classic college football at it's best, it was also a rivalry game of respect.
Maybe if the dominoes fall correctly in 10 years or so once the grant of rights deals with the current Big 12 run their coarse...maybe...just maybe the Big 10 could go after some of those old Big 8 teams in future expansion. Out of all those old Big 8 teams that could be a target for the Big 10 I definitely think Kansas, Missouri, and Oklahoma are in play. The sticking point is what do you do with those "in-state rival schools" such as Kansas State and Oklahoma State?