[IanCal]

That makes sense, release and iterate!

Personally I'd like to use some access management, and there's one case that I've not seen solved particularly well (though would appreciate anyone chiming in with things I've missed):

Distinct write and create permissions.

I'd like to be able to grant someone permission to create files but not allow them to modify or delete them later. I end up generally adding this externally.

I think B2 is really close to this, as you've got the file ids for multiple versions, so I can effectively ignore the filenames and use the file ids instead. It'd need a difference between "upload new version" and "delete version" though.