A few threads to check out:
- https://community.metabrainz.org/t/gamification-of-musicbrainz-editing-ways-to-increase-perceived-pay-off-of-editing/
- https://community.metabrainz.org/t/redesigning-bookbrainz-achievement-badges/
It would be a great way to engage a different type of editor - are you keen to code it? 