I doubt that Clemson or Florida State would be invited. The SEC schools have to vote them in, and most SEC schools only want one school per state from now on.
Oklahoma would be acceptable, but OSU would not bring enough to the table. And, I doubt Oklahomans would let OU leave OSU hanging by themselves at the mercy of tu.
VA Tech and one of the North Carolina schools would bring in TV sets from Va, NC and Washington DC. That would also add two fairly large states onto the SEC Map and significantly enlarge their footprint.
Also, VA Tech is a lot like A&M. I'd like to see them in the SEC.
Whatever, it's sure going to be interesting.