I've tried searching for any mentions of this and was surprised I couldn't find anything. I apologize if it's already been brought up, and any links would be appreciated.
This is being slowly adapted by other music software, but the ability to tag multiple genres or artists, separated by semicolon, and have each genre/artist displayed on its own.
e.g. If an album is tagged with genre "Trip-Hop; Electronica", the album would be displayed under both "Trip-Hop" and "Electronica", and there would be no genre listed as "Trip-Hop; Electronica".
Similar with artist, e.g. if an album is tagged with album artist "Various Artists" and a track is tagged with "Brian Eno; David Bowie; Aphex Twin", the album would show up under album artist "Various Artists", and the track would show up under artists "Brian Eno", "David Bowie", and "Aphex Twin", but there would be no artist listed as "Brian Eno; David Bowie; Aphex Twin".