I get the vibe that the SEC would be OK with the status quo, for the next few years.
Top officials from Florida, South Carolina, Georgia, Mississippi State, and Alabama (those I have read about), certainly sound like the status quo is in order. I don't think this conference is seeking to expand anytime soon by their conservative messages on the subject. Slive has pretty tight control on the messaging and one does not see deviation on this. Adjusting to 14 (and that includes issues with ALL SEC sponsored sports) has had its complicated moments, and the SEC is very sensitive to trying to keep all schools integrated as best as possible in playing each other fairly timely. There's some east-west divisional rivalries they don't want to break which go beyond permanent cross-overs.
With launching a SEC-oriented network via ESPN, some thinking may change on this with big money offers and pressures. The SEC has emphasized they shall pay attention to what other major conferences may do, and would act as deem necessary to enhance their own interests.
The SEC has been a big initiator with the super-sizing stuff. But for a variety of reasons, there is no intent to move on the ACC at present.
I even believe the B1G has taken a pause on this, after some loose and speculative talk. Agree tute79, nothing is going to happen until the Maryland lawsuit is settled. I expect it shall be settled for much less than the 52 million or so the ACC demands. But the legal fees shall reach the million dollar levels as well as it may go on and on for awhile.