I guess it depends on how you define value. To me right now, it seems like overall brand is the main concern - not eyeballs in market, academic fit, geography, etc. Are you Coke or are you Fanta?
For overall branding value, I would rank:
- S: ND
- A: Clemson, FSU
- B: Miami, UNC
- C: VT, NCSt, LV
- D: Pitt, Duke, UVa, SMU, Stanford
- F: Syr, GT, Cal
- Z: WF, BC
There's arguments to be had plus or minus a grade, but I think that's close.
I think the Big12 would take any of the D or better teams if ACC blows up (maybe not SMU?). I would agree Duke doesn't make sense for the B1G unless they are adding like 6 teams or something crazy like that.
If I was the B1G, I would go big to 24 teams and get Clemson, FSU, Miami, UNC, Stanford, and ND. And if ND just won't play, then Duke or UVa works. Wreck the ACC, and leave the SEC smaller and with no good properties to chase. It might be dilutive overall, but it would hurt the SEC a lot.