I'm exploring the new option implemented in org 9.7:

"id: links support search options like [[id:my-id::*child heading]]: Any valid fuzzy location will work as a search option."

Do you use any way to generate UNIQUE search contexts?

I was thinking about submitting this feature request, but probably it will have caveats:

If the search context is in the form "fn:number", update that "number" too when normalizing footnotes (org-footnote-normalize.

For example:

* headline 1

:PROPERTIES:
:ID:       2024-08-25T121008356645
:END:

blah blah [fn:20] blah

* headline 2

The goal is to automatically create unique search contexts using the features of the footnotes, like in this link to  [[id:2024-08-25T121008356645::fn:20][blah]]