SEC is all about football. If you think of this as a chess match, by bringing in Miami, Florida state, Clemson, Houston, Louisville, Va Tech, etc you secure the recruiting hotbeds and bring in huge football powers.
Imagine bringing those schools in, and then comparing those results to the B1G. You now have tOSU and USC vs an SEC with no less than 10 different schools with championships since 2000.
If that's how they play chess they're going to get murdered.
First off, I mentioned the Southern conference, but the Southern Conference had Virginia, Maryland, and North Carolina. So they are going for the mini version of the Southern Conference in that scenario, a more stunted version.
The only new territory that they are securing in that scenario is Virginia. That's it, they already are present and recruit well in all of those areas and well they do ok in Virginia as well.
It's pretty amateurish to be just like ok let's add all the already in SEC territory programs that seem kind of good at football. Don't get me wrong, I think a lot of people running the show at the SEC are amateurish. They've repeatedly signed short sighted SEC TV deals, etc... but it's a temporary gain at best.
Va Tech already took the tumble I predicted years ago, but let's consider Clemson and FSU for instance. What will their programs look like after a few years of SEC competition? Does anyone really think they'll really push aside the true SEC powers? Or, will they look like a pre-Dabo, pre-Bobby type or program which overall was pretty forgettable? Long term these are middle of the road SEC programs, not the centerpieces of a move that counters what the Big 10 is up to.
If the SEC responds to the Big 10 getting Notre Dame and USC with FSU and Clemson they've already lost. Seriously, game over. If that's their chess moves they're cooked
Edit: I would add that is isn't that adding FSU and VT for instance is so unbearable, but there needs to be more of it than that. If they add FSU, VT, North Carolina for instance, ok then at least there's some meaningful expansion there. But if all they end up doing is inviting another person to dinner while essentially still sharing the same amount of food as before, that's just no good.