This is something I have been wanting for nearly a decade. A lot of writing software isn't just implementing your logic and abstractions but actively thinking about how to organize code to the constraints of the filesystem. Having to actively model your modules around file paths, Rust for example tightly binding the use of `mod` to your layout. Refactoring is the same, a non-trivial amount of time on large projects when re-factoring is realising you need to re-organise some module hierarchy and that involves modifying the file system too.

I really dislike this, instead of a fuzzy file finder I want a fuzzy function finder, where all functions are just kept in a database that I can pull into buffers at will. Where hierarchy is only based on the logical structure of your program and the filesystem ceases exist. "New Function" over "New File". You can get the "Fuzzy Function" finder part somewhat with LSP Symbols, but it doesn't get rid of the having to think about files.

Unfortunately I don't think you can get this without first-class support by the language itself, and new languages getting critical adoption isn't a regular thing.