This is a really cool concept, @DonnieFontaine! With the revitalized effort to implement the new AURA protocol for beets:
It seems like a great time to be building new web-based frontends. The nice thing about the new plugin is that it doesn’t bake in any particular client—so it should be conceptually easy to provide new ones like this separately. Maybe it’s worth looking into making this the first web-based AURA client?