I saw some discussion of this in GitHub issue #273, but I am not sure if there has been any update on it.
Some MusicBrainz aware taggers can add tags for various MusicBrainz ids into the files, and ListenBrainz supports inclusion of the MusicBrainz ids in the submission data.
If playing a file which has MusicBrainz tags already present, it would be nice if they were included when scrobbling to ListenBrainz. That way ListenBrainz can link directly to the known recording / artist for each listen instead of just having the names as text.