There have been 7 CFB Playoff seasons. These teams have each won their conference at least 5 times in those 7 seasons. There has been absolutely no parity in the 4 best conferences in CFB.

Oklahoma has 6 Straight B12 Titles
Clemson has 6 Straight ACC Titles
Ohio State has 4 Straight B1G Titles, and 5 in the Playoff Era
Alabama has 1 Straight SEC Title, and 5 in the Playoff Era

Those arguing against Playoff expansion don't realize that Parity will never be a thing in CFB again until more teams have access. Right now these teams account for 78% of the Big 4 conference's championships. There is hardly a mystery these days as to who will be the best teams in CFB.

12 team playoff will help everyone recruit the top players. There will be realistic playoff hopes to 40-50 teams each season in CFB instead of 5-6.

The BCS was bad, the 4 team playoff has been even worse. The 12 team playoff can't come soon enough.