Amy Daughters wrote and interesting article, making a suggestion to count G5 opponents as only half a P5. It had an interesting impact on how the Playoff standings would have looked
Oklahoma, Wisconsin, Clemson and Georgia would have been the 4. Ohio State and Alabama might not have qualified.
http://www.fbschedules.com/2018/06/what-...-full-win/
She admits it has flaws, but it could push for more schedule equity in P5, forcing the SEC and ACC to add an additional power opponent to be on par with the B1G , P12 and B12. Of course the ACC and SEC schools with built in P5 rivals like Georgia (GT) and Clemson (So Car) get that 10th P5 opponent.
While I believe Alabama is ridiculously loaded and hard to keep out of a Playoff, and would get in by any rules they have to play by, it's clear that Saban sets up the most minimum path to get there, so he has to be forced by rules to play on a level playing field. Unfortunately there are enough college coaches like him that some sort of weighting much worse non-power opponents, especially any scheduled after September.
Anyway I like Daughters' concept, although I think it's unworkable in anything like the method she laid out..