I like it all except the conference champs being automatic. I understand winning a conference often means something, but occasionally it doesn't.
If the conference champs are automatic, it takes away much argument. You're talking about winning it on the field and that's what would happen.
Were this to come about, though, I'd advocate the SEC either do away with East vs. West games OR take East vs. West games out of the computation for division crown OR change the SEC schedule so you play all eleven teams in the league and have just one OOC slot.
(I'd choose option two).