Hello! I maintain the deja-dup snap and was looking at confining it (rather than continuing as a classic snap).
One piece that is missing is the ability to talk to the org.gtk.vfs daemon. This means I can’t mount, read, or write to (for example) an sftp:// or webdav:// URL through gio. Or query gvfs to see which removable drives are connected.
It would be nice if there were an interface that allowed that.