I feel like it would be nice to pull at least some content when the first person opens the box lol. Maybe the last 10-100 posts, or from the past 30-90 days, or whatever.

Maybe do this kind of smaller sync every time another user subscribes to it until it’s fully synced up, 'cause that means we all really want the content lol.

Kbin could do that independently right? Or would ActivityPub need to change to allow that?