Here is the way I see things going down and if so, SEC would end up great and probably be in better spot than we are now (not just money but general setup and schedules):
If they split the divisions in East and West, there won't be any cross-division games in my opinion.
Here is the best split for two divisions:
East: Alabama, Auburn, Florida, Georgia, Kentucky, South Carolina, Tennessee, Vanderbilt
West: Arkansas, LSU, Missouri, Mississippi State, Oklahoma, Ole Miss, Texas, and Texas A&M
You do 7 division games and 2 interdivision games. With the 2 interdivision game, each team will play a team from the other division once every four years as long as their isn't any permanent cross over games.
The only rivalries that are possibly loss in this scenario with any value are Alabama-LSU, Alabama-Miss State, Ole Miss-Vanderbilt. None of these rivalries outside of Alabama vs. LSU mean that much and Alabama vs. LSU is really more of a recent rivalry so you really do not lose much by losing these games.
Meanwhile you restore rivalries like Auburn and Tennessee. This scenario just works in so many ways. Although LSU will miss Alabama, I think they will fine Oklahoma and Texas to be even more intriguing of a matchup. Oklahoma vs. Arkansas also has the potential to be a fun series. Texas gets its rivalries back with A&M and Arkansas. Oklahoma gets to play Missouri again. It has the best wins.
Also emphasis my previous statement that each SEC school would play all of the schools from the other division once every four years if allowed two interdivision games that rotate every year.