Since 2005 http://wiki.musicbrainz.org/Subtitle_Style has "Eventually the MusicBrainz database will be able to support sub-titles as a field in their own right and this will allow the user to choose how to display them". It would be great to finally implement it.

Thinking about the schema, currently it could be possible to implement it "simply" by adding new columns on the desired entity tables, so they would have something like `name`,`title`,`title_separator` and `subtitle`. The first ensures not to break old code(the full title would be reached as now using the `name` column), while the others expose the new feature and lets new code using the MB NGS database to choose to show subtitle or not (by using title+separator+subtitle, only title, handling each part (title/subtitle) independently, etc) .

My proposed solution would keep the current association with the full title as now (so code using the current schema would not break) and would let new code (aware of subtitles) handle them as desired.