@hj @lain I'm less averse to adding to federation than you as long as we're adding information and not removing it. Example: most Pleroma instances ingest the scrobbles without the url field just fine, and so backwards compatibility will work just fine. But if I were to do something like put the title, album, artist fields into a "track" object it would, and so I'm averse.

In this case, adding a new scope will create undefined behavior in out of date Pleroma instances and Mastodon instances and you've convinced me that I should not pursue this avenue