I don't know how possible this will be, but I feel one of the biggest barriers to ListenBrainz being used by everyone is the fact that if you've got music tastes that no MusicBrainz editor has, you probably won't have good data in your stats (just okay data), especially when it comes to album artwork

I think if we can at least get cover art from the streaming services we've partnered with, currently Apple Music, Spotify, and SoundCloud, that might be a good step in the right direction (at least until MusicBrainz opens up to the idea of directly importing data from these sources, which I wouldn't hold my breath for)

I think we've actually already done similar for YouTube, since often listens I've logged through WebScrobbler have cover art (tho that could be something else)

we could use this data to improve charts (attached image) and the Stats Art Generator (at least the templates that use album artwork), as for the latter, an album won't show at all if there's no album artwork for the release in question