I can attest to having spent (wasted?) hours upon hours of what-if realignment scenarios over the course of my life. It's part of the reason I can draw out the lower 48 states free-hand really well. It's super nerdy.
But when it comes to the 16x4 model, WV is never left out. The "fringe" schools are always Baylor, TCU, Iowa State, or Kansas State.
Baylor - more so now, with the scandal(s)
TCU - what are they without Texas?
Iowa State - AAU member, but no nobody's radar
Kansas State - what are they without Snyder?
Other schools would be on the fringe, too, except they've been where they've been for awhile, or they have special non-football strengths.
Kansas - basketball
Wake Forest and Vanderbilt don't really belong, but they're grandfathered in. If it was all restarted from scratch today, they'd be FCS at best.