ListenBrainz currently allows to create playlist (and import/export via API) but it would be great for the end-user to be able to import playlists as plain text files. There are multiple formats, from .m3u8 to XPSF or JSPF which would easily fit in this context.
Adding tracks one by one makes the current feature almost unusable for people with already created playlists. The ability to load a m3u8 file with artist - title or a simple list with those values would be great, if not a requisite here. Nearest matches could be automatically added and the user could edit the list later if fixes are needed.
Also it would be great to be able to export the playlist to plain text formats, not only to Spotify. XSPF or JSPF already exist for this use case where there is not a physical file but just an identifier (wether it is the artist and title or an MBID). Multiple players support those formats (for ex. Foobar2000).
Any plans for this?