I seem to recall being told we could not list specific contract wishes etc. on Disboards.
So, someone would have to set up an income producing website

The website could have three automatic adjustment calculations for different resort values (someone could trade AKL for BWV for example with a $XX/pp adjustment), and any amount of points difference between the two contracts (140 vs 150 for example), and any amount of points remaining/used for current and next year.
Those are numeric differences not subjective to some extent. The two parties might differ on whether they liked the $XX value of the adjustment allocations - but that could be a simple here is my offer [insert $/resort, $/contract points, $/unused points]. Each to pay their own Escrow/Title/Estoppel fees. Plus a shared flat fee to the website per dual transaction. The site could generate a stock purchase agreement to give to their recommended escrow
As to ROFR, as long as the "purchase agreement" was clearly stated as "Contingent on BOTH parties receiving their agreed Contracts at the agreed adjustment amounts", ROFR is a non issue. If
DVC wanted to step in and take both, issuing both the requested Contracts at the terms negotiated, everyone still gets what they wanted.