They should do it for at least this season....
Give me one good reason why that they should?
After every P5 team has had 4 games I think most of us could come up with the 4 teams that should be there and wouldn't be off by much. There is a 90% chance Alabama, Clemson, and Ohio State will be in the playoffs and whoever is 4th isn't going to shock the world and beat everyone else.
The group that possibly could get into the 4th spot:
Texas - If they are undefeated and if they get their shit straight and win out then they should be there (probably will drop a game and won't matter)
Florida - If they go undefeated in conference play they should be in even if they lose the SEC CG
Miami - They look like world beaters but let's see what they do against Clemson but it's a long shot.
Georgia - I don't think they get their shit together enough.
Oklahoma - A lot of teams have to lose in order to erase a home loss against Kansas State
Auburn - They have to run the table and not very probably with their schedule and issues
Miss State - The Dark Horse but if they perform as they did against LSU and come out of the season with say just one close loss to Alabama then they should get consideration. Not very probable though.
There isn't a PAC team strong enough to win it all in the playoffs so we shouldn't waste our time.
B1G - I'm not discounting someone else out of the B1G other than Ohio State could make a run like a Penn State or a Wisconsin but I just don't see it happening.
My best guess is you are looking at two SEC teams this year if Texas stumbles. If you expand to 6 you might get three if they didn't do something retarded like automatic conference champion bids (which is a waste of our time).