It not going to be once in awhile, its going to be most years getting in ONE team, lets be real here, if we do not take the two team guarantee per conference, the B10 and SEC will set up a system that is going to end up with the B12 and ACC fighting over 1 spot per year, sometimes two, while the other two leagues get 9, 10 or more.
You think the rankings/selection will get way worse than last year? Or you think the Big 12 will actually be much worse at football each passing year? I'm not necessarily disagreeing.
Last year's non B10/SEC teams cfp ranking before playoff bowls:
#5ND (at large outside B10/SEC)
#9BSU (auto in 5+)
#10 SMU (at large in 5+)
#12 ASU (auto in 5+)
#13 Miami (at large in 5+)
#16 Clemson (auto in 5+)
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#17 BYU, Big 12 is first team out
#18 ISU, Big 12 is second team out
So the Big Ten would have gotten four either way, The SEC would have got 6 with either system with the 5th and 6th teams being Ole Miss and South Carolina.
The rankings weren't off last year with Big Ten and SEC, they were off the entire year underrating the superior Big 12 vs the inferior ACC. BYU has absolutely nothing on its resume to suggest it should have been even one spot behind SMU let alone 7 spots behind them.
If you could adjust for the mistake of the media and CFP massively overrating ACC vs Big 12, it should have actually been the Big 12 to get 2/3 at large bids. Certainly BYU was more worthy than any ACC team was and they weren't even in the mix for 16 spots, let alone 12.
Big 12 had 3 teams in top 15 of AP poll after bowls/playoff.