What's your doomsday scenario? Here's mine.
B1G, B12, and SEC end up with 2 loss conference champs.
ACC has one loss champ and it's Miami.
One loss non-conference winners who will claim worthiness: Wisconsin, if their loss is a close one and they play very well, I think they have a case. Alabama, who didn't even win their division, will claim worthy. For this reason alone I want UGA to win CCG, so in theory there will be two teams who can claim superiority to Bama, Aubrn who beat them and UGA, if they beat Auburn.
So who gets in is not as important in my scenario as who doesn't . the championship is a farce so I don't care who wins it.
But, If Alabama and Wisconsn are voted into the playoff in favor of ANY two loss conference Champion, well then, pop some corn because that's a fight that will be worth watching.