guitarmakermark wrote:
My customer's intent in commissioning me for this project is to restore the guitar to better-than-new playability; he is the second owner, purchased it in 1980, and he plans to keep the guitar forever.
G'day mate, welcome to the forum---

I guess the answer lies in the quoted para. If the guy intends keeping it forever, I guess he isn't interested in resale value.
I would be surprised if there weren't a lot of nice collectors guitars out there that have been refretted, and the fretboard adjusted

a bit.
BTW like the guitar in your newbie post