A Slack filesystem that makes files uploaded to Slack openable (most probably readonly) in a local file viewer would be cool though.
Chicken Scheme has a 9p module, that happens to have some real world examples, in Scheme. Scroll down a tiny bit: https://wiki.call-cc.org/eggref/5/9p#data-directory-listing
Really wish there were better references to share for this stuff. This still feels like one of the most user-empowering paths computing has to expose itself, utterly universal & already with some user-savy right there.