I think the nine game schedule actually makes schedule equality even more of an issue than it is now. Why? Because you'd end up with uneven home vs. away games every year. And Alabama would somehow always get five home games.
Also, think about the teams that are playing neutral site games already. Texas A&M and Arkansas as well as Georgia and Florida.
Since that counts as a home game, if you want to keep those games in Dallas and Jacksonville then that means every other year those teams could only have three home games and six road or neutral conference games.
That's why I've tossed out the idea of every school playing a neutral game each year. Then you'd have four home, four away, and one neutral site game.
Since you've already got two neutral site games set up, you only need five more.
I'd play Kentucky and Vandy in Nashville every year. Ole Miss and Mississippi State in Memphis or Jackson. South Carolina and Tennessee in Charlotte and Alabama and Auburn in the Georgia Dome. (There's no stadium good enough to host the Iron Bowl in the state of Alabama.)
The toughest game left is LSU and Missouri, who don't necessarily have rivals left that make sense and are on opposite sides of the division line.
So my solution is you schedule a game in New Orleans and Kansas City every year and give half the tickets to the opposing fan base. It's not really neutral, but don't you think teams would love to play in New Orleans? Kansas City is a tougher sell, but it helps to keep Missouri politicians happy. If you wanted to you could rotate the games between Kansas City and St. Louis.
The big benefit here is that it theoretically keeps the schedules relatively even and colonizes several cities that don't have SEC games presently. South Carolina and UT would turn into a huge game in Charlotte, a city that both schools want to recruit. Kentucky fans love Nashville and this game would be evenly divided fan-wise, Alabama and Auburn fans would ***** about playing outside the state until you pointed out to both of them that it is a huge recruiting advantage to play in Atlanta.