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One of the most intriguing implications of the possible (and likely, in my opinion) addition of Texas A&M to the SEC would be the resulting need for more teams to likewise join the conference.
The SEC currently has 12 teams, the minimum needed for a championship game according to NCAA rules. There are six teams each in the East and West division, allowing for each school to play all the other teams in their division and one permanent opposite-division opponent annually.
For instance, Tennessee plays Vanderbilt, Kentucky, South Carolina, Georgia and Florida each year within its division and Alabama is the Volunteers' annual opposite-division opponent.
In order to keep this kind of balance, at least one team must be added on the east coast to get a seven-team balance in the divisions.
Clemson and Florida State are being heavily rumored to be on the SEC's short list as East Division newcomers. Also on the table is the possibility to add three more teams with Texas A&M, rounding the division out at 16 teams.
The other West Division school would be Missouri or in a perfect world, Oklahoma.
As you can see, the addition of Texas A&M would only begin a chain reaction of conference switching.