I just looked at standings back to the 2013 season (excluded 2020). This format would have resulted in the same CCG pairings every season except for 2015 & 2018 in which the top 2 north teams were the the top 2 finishers in the league. In 2018, Wazzu finished with a better P12 record than Utah did. They would have played UW in back to back games to end the regular season.
Another observation:
1 loss gets you into the CCG
2 losses likely gets you into the CCG
Big drop-off in final records after top 3 teams.