As nice as WebDAV would've been it's probably a non-starter in many scenarios due to weird limits, like Windows has a default size-limit of 50mb.

I'm tinkering on a project where I'd like to project a filesystem from code and added web-dav support, the 50mb limit will be fine since it's a corner-case for files to be bigger but it did put a dent into my enthusiasm since I had envisioned using it in more places.