This feels like a natural next step for @mastowatch but the entire design of the app is structured around Mastodon instance data. I think if someone were going to do something similar for #activitypub at large, it would have to be a different app that is more generalized.
That said, I would love to see someone take the idea and do something for every kind of ActivityPub server/software. I would use it so much. I would probably even add a link to it within @mastowatch.
