Thinking back to some of the more controversial years of the BCS if we had the playoff. We were deprived of some awesome matchups:
2000
(1) Oklahoma vs. (4) Washington
(2) Florida St vs. (3) Miami
2001
(1) Miami vs. (4) Oregon
(2) Nebraska vs. (3) Colorado
2004
(1) USC vs. (4) Texas
(2) Oklahoma vs. (3) Auburn
2010
(1) Auburn vs. (4) Stanford
(2) Oregon vs. (3) TCU
2011
(1) LSU vs. (4) Stanford
(2) Alabama vs. (3) Oklahoma State
There's several other years you can do this what-if as well. And I'm sure you could go back even farther to some of those years where we had split national champs thanks to the pollsters.
think of the lift the B12 would have gotten from that? Maybe would have helped stave off realignment.