So does the college football playoffs wait until the dust settles to determine how the 12 teams will be selected. Right now there is the Sec Big 10 Big 12 ACC. If any other conference collapses the format has to change
“The 12-team format will feature, in order, the top four conference champions, followed by some combination of the top six at-large bids and two highest-ranked remaining conference champions. Teams will be ordered based on the College Football Playoff rankings.”
College football's 12-team playoff, explained: Start date, how it will work & more to know about new CFP format | Sporting News
The Sporting News provides a detailed explainer on the College Football Playoff, from start date to format to how it would look in 2022.www.sportingnews.com
I think it just changes or goes away as we know it. With the lack of parity you might face on average stronger opponents in conference championships than you do in the playoff.