The move from 2 to 4 was controversial, imagine we are still doing BCS, Clemson probably gets left out this year. Defending champion, undefeated, won 2 of last 3 would be left out.
Im in favor of 8 because anything that devalues the current bullshit SEC poll alignment system is a good thing. How best to debunk the SEC myth of extreme dominance? Let other teams in who have a chance to beat them.
In 5 years the SEC has never missed out and got 2 teams in once. Every year it's a major discussion of multiple SEC teams getting in while that discussion is not applied to any other conference. The biggest downside to expansion is SEC gets at least 2 in every single year. The upside is they will never get to have 50% of the field, inflating win chances and perpetuating the myth.
Other expansion upside I see is a major devaluation of the polls which ARE the SEC bias. We all know how that circle jerk works from pre-season through November patsy week, and the human polls affect the human committee.
I'm in favor of anything that slows the consolidation of talent that turns the myth into reality. I'm in favor of the talent spreading out and parity across regions, historically what college football has always been. The rate of talent consolidation in the SEC should alarm anyone who loves college football. How to dispel the myth? Beat them. How to beat them? Well, you have to play them. 2017 is a perfect example, the only team outside the southeast that any SEC team played and beat was UGA 20-19 over dome. The SEC combined lost to Purdue, michigan, Louisville, TCU, Cal, Clemson, FSU, UCLA, and Clemson again. Collectively they beat NC state, KSU, Syracuse, and FSU. In bowls they went 2-5 (excluding CFP). Wins over Louisville and Michigan. Losses to Wake, Domer, Northwestern, UCF, and UT. Yet they represented 50% of the CFP field.