With a large (at least in kilograms) collection of vinyl and shellac records, I have looked into the 'what happens next (ie., what should my executor do)' issue.
The most memorable comment was in the blog of a buyer of collections. Can't find the link but paraphrased: "I will never even look at a collection that has had anyone else peruse and buy some discs. They bought your collection." As in, most 'collections' are really 'accumulations', the dealer will buy your accumulation and give you psychological cover that someone really values all of it, but keep the valuable stuff and bin the rest --- and first do an assay that there are indeed some gems in the ore.
Also, "If you recognize the performers, it's not of any value".
I see so many records at thrift shops that make me think "Crap, did I drop that off by mistake in my last move" that I have to concede that the fate of my collection will be the replacement of fossil fuels. As a classical listener and collector, I am nontheless moving to a (cynical?) assessment that a lot of those collections are "the music you were told you should enjoy".
Yep, it's heartbreaking. This thread makes me think about what the real goal should be, given that the material media is merely fuel. Maybe a short document about the things that I want to charge the beneficiaries with giving a listen to?