Here’s the issue, to put it simply: when uploading compilations made by various artists within a defined and recurring group, which one would this release go to?
There’s two ideas here.
The first: a release of this kind should go to the special purpose Various Artists, because it has, well, various artists. It’s a compilation with a ton of artists who all contributed equally.
The second: there are certain literal groups that aren’t bands that create these kinds of compilations. These same groups may reoccur two, three, five times. And that’s why we shouldn’t use Various Artists. If we use a new “artist”, we can make relationships between that “artist” and its members, which are the recurring musicians who tend to make tracks for these compilations.
These groups shouldn’t be considered, in the MusicBrainz sense, “groups.” The submission page for artists says you can consider something a “group” in the MusicBrainz sense when the artists perform together, but this happens very little on these compilations with a bunch of one artist tracks.
So my idea is to create a new artist type called the “collective.” A collective is not a “group” because members don’t generally all come together to make each song like a band might. It’s not a “person” either. It’s not Various Artists because we would like to link the members of this collective to some entity. Instead, it holds relationships to a bunch of artists who each regularly contribute to releases, but often individually with the occasional collaboration between a couple members. In either case, no track is ever under the name of the collective itself, only the artists who made the track.