You can’t have a recommendation algorithm on open-source software because it requires a lot of compute to calculate personalized recommendations for each user, which simply isn’t feasible for most instances. Instead, there should be an API endpoint that returns post metadata for the last week, allowing users to implement their own ranking algorithm via a userscript running on their own hardware.

I also believe there should be a more personalized “All” feed per instance. Each instance could surface different content tuned to the admins or to a subset of long-term users—something stable that doesn’t change often but varies from server to server.

I like the idea of custom feeds that allow adding users, communities, instances or tags. That way you can personalize better what you see. So adding a single instance to the feed would be like looking at the local feed from that instance, but you could make many more kinds of feeds.