Or UCF and USF can head to the B12 and UT and TTU can be swopped out to cusa. Baylor and TCU got Texas covered.
Seriously, the B12 has the politics of 'sister' schools as much as anyone.
There's a value to it, otherwise Oklahoma and Oklahoma State would be sitting in another conference right now.
The thought of removing charter members or any other based on the idea to stretch TV and recruiting demographics is only embracing one preference and dismissing all the other traditional and fundamental considerations.
Attrition should be natural and it does happen over time or in short order. And it is not all based on school sizes, W-L records, and prejudices. Suwanee, Tulane, and Georgia Tech left the SEC for varying reasons over a long dated period of time. Colorado, Nebraska, Texas A&M, and Missouri left the B12 and none of them were overtly forced away.
To 'Temple' a school needs to be a 'just cause'. And even Temple was brought back to the old BE when new depletions happened and desperation was abound.
If the SEC was being set-up today certainly it would look differently. Maybe there would be one or no Mississippi schools. But it would depend on who are the core for the movement. MSU and Ole Miss were major in the original core.
UCF and USF are growing and advancing in central/southern Florida market and each can point to certain successes including UCF's bowl win over Baylor. But that is not a ticket on demand to the SEC. Nor is it proof that their highly populated and concentrated demographic trumps the tradition and enthusiasm exhibited elsewhere within the SEC footprint, particularly where the geographic heart lies.
Not sure the SEC craves any fix, but if it does, tossing away Mississippi for a couple of directional, commuter Florida schools will not be the answer. Not one current SEC school would support switching out, say, MSU for UCF. The University of Florida and a formidable group of others in the SEC don't want even FSU--and they are very SEC-like in multiple dimensions---including a recent national championship. They are not after Miami either. But they would take USF and/or UCF? No way.
The two Mississippi schools are only occasional powers within the SEC, but their fan support and facilities are not in any kind of decline. Mississippi State, for example, has expanded Scott Field, from around 35,000 or so in 1980 to approximately 61,000-plus now (certainly not the upper tier in the SEC, but compares well across the country). And those folks do have consistent sell-outs. Two years ago or so, I saw one publication that had them ranked #1 in growth of fan support.
MSU for NCSU? Why not UNC or Ohio State or Notre Dame? All those are contiguous by state. These are not trades. Even if desired, a conference cannot take what's not available to them.