Currently, it's possible to see all Release Groups that a Recording appears in - e.g., https://beta.musicbrainz.org/artist/817c68f4-e110-4529-82fa-aec902e9768f/recordings.  The reverse would be useful - the Release Group should list the Recordings that appear within.  This would be useful to find duplicate recordings, mistaken recordings, etc.

e.g., the largest release in https://beta.musicbrainz.org/release-group/33d67f25-ee34-3bb9-86d6-c23abd5d9550 is 22 tracks, but a list of 30+ recordings would be expected because there are multiple mixes/edits contained in the release group.