This could actually happen but I don't think it would be very popular with the college football fans. Note.......I'm only using these two teams as examples.
Next year the SEC will not have divisions. The top two teams will play for the SEC Championship. Georgia and Alabama will play each other in the regular season. Let's say Georgia wins it and goes undefeated again and bama only has that one loss so they meet up in the SEC Championship game. Say bama wins it and both wind up in the 12 team playoffs. Depending on the seeding, they could very well meet up again in the National Championship game. I think that would be worse than a team getting left out like FSU was this year.