On a very slight tangent: WTH is the committee going to do if Penn State whips Wisconsin in the B1G+ Conference Championship? If they pick O$U and don't also pick PSU, they'll have a riot to deal with. On the other hand, if they let both the Evil Empire and PSU into the dance, they'll have a riot from different quarters to deal with -- like the fans of every other P5 Conference. I'm rooting for this scenario because it'll be so much fun watching one or other of the riots. ;-)
Dream chaos scenario:
Washington, Clemson, and Penn State all lose their respective championship games.
That puts Alabama and Ohio State in for sure. Then who else do you put in? I would say Wisconsin, since they earned the right by winning the Big Ten. Let them and Ohio State rematch as the #2 and #3. As for #4, there is a strong argument that Michigan could get back in this thing. They would have a better resume than USC, Colorado, Oklahoma, Oklahoma State, Washington and presumably Clemson also.
Could they really let three Big Ten teams in to try and slay Alabama?