One way to increase cross-pollination between projects would be to track how many times a particular recording has been listened to on ListenBrainz and display that number on the MusicBrainz recording's page. So, for example, if I listened to Happy Trails once, a tab saying something "ListenBrainz Statistics" would pop up like the Acoustic Analysis one and inside that tab would be something like "Listens" that was set to 1 and "Unique Listeners" also set to one. If somebody else listened to that same song with LB, both would go to two. If I listened to it again, "Listens" would go to 2 while the other would remain at 1.