Right now we return every bit field of editor privileges as a separate property in our internal JSON format: https://github.com/metabrainz/musicbrainz-server/blob/a275738/lib/MusicBrainz/Server/Entity/Editor.pm#L310-L321

It'd simplify and reduce the size of the format (as in less fields to keep track of, and smaller JSON payloads for pages that deal with a lot of editor objects) if we sent the privileges as a number and calculated the fields in JS.