Conferences will want the best two teams playing in the championship game for tv ratings and more money. Divisions could hinder that. Go look at the earlier Big 12 championship games, just for one example in like 2004, they had an unranked Colorado play Oklahoma. Oklahoma, Texas, and Texas Tech were by far the three best teams in the conference but all in the same division. Yormak said they were staying with a no-division format last year with the four new additions, I doubt two more will change it.