I think that is where you have it completely wrong. Schools know there would be a limited amount of spots in the single superconference ESPN is trying to build. At a certain point the pressure to make sure you don’t end up on the outside looking in will become too much for some schools and they will entertain joining the SEC.
The time to kill the idea is NOW, before the SEC can make another move to increase that pressure.
I don't think anything changes if a big conference of say 32 schools happened. If you're a brand name like USC, OSU, Michigan, you'll always be included and if you're the SEC that 32 school conference isn't going to include the likes of Miss State, Vandy, Kentucky etc..either. They would have to be jettisoned.
People make the mistake that IF and I say IF one big conference happened that everyone is joining the SEC, that's not what would happen. Everyone, including the SEC would bet jettisoning the dead weight. So it affects no one who is a big brand as they will always have a seat at the table (there is no outside looking in for big brands) and would affect anyone who is dead weight and B10 making a move now or not makes no difference to that.
Secondly, I'm not so sure one big conference will ever happen and certainly not any time soon. There's an academic snobbery that's there among admin/presidents of many of these universities and many of them don't want associate with others in the SEC. It's not as if the B10 is in the poverty line either for them to even think about it and it will never be the case where they are 25-35M behind like the ACC, PAC12 are now or soon to be.
I've advocated big moves (cream of both coasts) by the B10 and still do but it all depends on the numbers. Some have too much anxiety over these things to the point of thinking OSU/Michigan would leave to the SEC and on their own no less lol, I mean come on.
It reminds me of when everyone was leaving the BE/AAC and each defection brought deafening levels of panic/fear here. That was actually understandable at least. I said then too, without inside info, our market will likely see us through and timing sometime before the next tv deal but who knows exactly when and in the end it did. That to me was a more worrying situation. The B10 should look at actions to take including expansion but any level of anxiety shouldn't even exist really.
The B10 is going to be fine regardless. The only question is will they be out front and super premium. That is the reason I advocate for expansion, to create a super premium national property overall in sports rights, not that I think the B10 will be left way behind in the dust. Scheduling alliance takes away nothing from that for the time being and can actually bolster it by providing real world hard info on which schools bring the most value.
Like I said if this scheduling alliance comes to fruition make it a 2 for 1 on the conference level (not school to school) in the B10's favor. That way while the ACC/PAC12 are getting a boost, we're getting a bigger boost of quality games and hopefully more 4M club games as well.