@strypey no idea, maybe. It should at least be a configurable option on both sides though for the admins.
[x] Download user history from remote instances on follow
[x] Send full user history to remote followers
I鈥檇 also imagine it鈥檇 be a low priority task. I鈥檇 even be fine with the posts taking an hour or so to completely populate. Or if they kinda loaded 5 at a time so more came in as you scrolled down until you reached the end, so it鈥檚 only the users you care about reading all their posts.