I think in order for both to work towards a better fediverse, there needs to be a "true" sync. Not like the bridge Bluesky is maintaining, we need something to sync both ways. Even if its just a subset with just public posts to begin with.

I know a lot of fediverse software has their own API that extends their own functionality beyond the AP protocol, just to make things more complicated :). But it does help with say bookwyrm needs to know something specific from another bookwyrm instance.