From Scout.com’s Tennessee site ($):
… The SEC has won six national titles in the 16 years since it switched to eight regular-season games and a championship game. In the four years previous to that (1988-91), playing seven conference games per season, the league won zero national championships. In the 16 years prior to that (1972-87), playing six league games per season, the SEC captured just three national titles.
At that rate, I figure if it went to a twelve game conference schedule, the SEC would never lose another MNC.