I second most of this, also answering a few points
I can tell there’s work being done on this, as there are very barebones release pages (like this) if you click the “Play on ListenBrainz” button right below the cover art on a MusicBrainz release. I don’t think there’s any way to access them directly from ListenBrainz at this time, but this is a feature I’m very much looking forward to~
they did something like this for this year’s Year in Music (see the beginning of this thread or my Year in Music), and based on some of the mockups @aerozol has been putting together, that’s in the minds of the design people. when and whether the developers get that in might be another story, but we can hope
this is a great idea, actually. and (in my mind, note I’m not a developer) might be pretty easy to implement. the ratio of listeners to listens I think could be a great indicator of what people like, no matter how popular a track or artist is.
I am kinda obsessed (lol GET IT) with this whole idea, and it also reminded me of one of Spotify’s billboard campaigns back in 2016. such an excellent idea~
I know this is something being worked on in general (https://tickets.metabrainz.org/browse/LB-1192), and two of the cases you’ve brought up here are probably already covered by LB-1191 and LB-631
this feature was pretty recently added, and I don’t think it has been publicized much outside of the forums, the MetaBrainz blog, and maybe IRC (not sure, as I’m not on the IRC).
I believe there’s a ticket for this too (LB-1036), and you can match other user’s listens as well (more details in the comments of LB-1198)