You sure do like to dunk on the new Big 12.
Medina's chart clearly shows that the new Big 12 is in better shape than the ACC and Pac 12.
Yes, adding in the number 3 and 18 teams would widen the gap.
It's not about liking it. It's about objectively looking at the stability of their situation and responding to their legitimate issues.
Six members have now departed in the last decade for greener pastures at other "P5" conferences, which in no case were really considered lateral moves.
Three of those six members were undoubtedly "helmet" teams, much higher in national perception than anyone who remained.
Six schools are being [or have been] brought in to replace those who left. Arguably the only of those six schools that have any national relevance are West Virginia and BYU. You can make an argument that those schools
might be similar in stature to Colorado/Mizzou, and probably below A&M. The remaining 4 schools, TCU, UCF, Cincinnati, and Houston are purely to add numbers.
The Big 12 now has, probably, 3 desirable properties for other conferences. Kansas, BYU, and West Virginia. West Virginia would leave in an instant if they got an ACC invite to pair with ND and go to 16. Kansas I'm sure would come to the B1G in an instant if they got an invite, to pair with ND or someone else and go to 16. BYU is in a weird situation where they'd probably only fit in the PAC otherwise, and I don't think they want to be there, so it's questionable.
My view of the new B12 is that it's a temporary holding pen until the next round of conference realignment. The conference may argue it's in great shape, but what do you think the schools who remain would do if they got invites to one of the four other P5 conferences?
I think if half your conference--the best half--departs in a decade for other "P" conferences, can you really continue considering yourself anything other than a "G" at that point?