Think this through:
With 6 conference games this year, lets use South Carolina and Florida as an example. Both teams go 5-1 in the division, but South Carolina beats Florida in the head-to-head. What happens if South Carolina loses its two western division games and Florida wins its two? You'd prefer a 5-3 South Carolina team playing for the east, over a 7-1 Florida team?
It's the SEC's prerogative if this is the direction they want to move, but why would they want to risk it? You would instantly be setting up a system that could devalue your best teams, and lessen your chances of getting a team in the National Championship game.
It will never happen.