Hmm... Not a fan of that approach. Would mess things up for my personal use case, at least, making the names less nice. I'm leaning on having some sort of a vault-specific database tracking existing codes across renames as an addition to the existing mechanism. I actually do like the idea of adding tags in the frontmatter, but then it'd become impossible to tag files and folders.

If only we had resource forks.

As for inspiration, I'm not really much of a note-taking system person. My system is just hyperlinking lots of notes together: https://ezhik.jp/hypertext-maximalism/ - this little plugin just helps with that outside of my vault.