Everything Will Change When The Day Comes

I am so confused. A "sub" used to refer, on the old place, as a "sub-reddit", but we do not have those here. Did you mean "community"?

(And as already covered, PieFed already has an implementation of this, so what is the "future" referring to there in that case?)

Repeating myself here, but the community migration tool on Piefed is somewhat incomplete. it only migrates posts and comments locally to the incoming instance its moving to. What is needed for proper community migration is the ability to all instances to recognise comment migration. And ideally, the automatic rerouting of all subscribers to the new community.
Effectively making communities modular. Much of this is outside Rimus power (due to the Fediverse still being most Lemmy, but one day... one day)
- Upvoting bc relevance but I somewhat disagree. Many people left Reddit not just bc of ads or poor treatment of app devs but bc of issues regarding "ownership" of a record. If I say something, can Reddit train AI off of it, or make money off of it, without my consent (using Reddit automatically assumes consent, even retroactively).
  So applying that same thinking process here, does anyone - not just Rimu but anyone - have the right to simply steal community content wholesale? And who would provide consent - just the current community mods? The past ones? Why wouldn't the commentors have the right to do or not do what they wish with their own comments? Setting aside how difficult it would be to even implement such a thing - like if someone agrees to migrate their comment, but they were replying to someone else, and included a quote from them, then is consent automatically granted for those words?
  It is a tricky subject. Perhaps importing the content in read-only mode is the best that could be hoped for, preserving a historical snapshot bc it is too difficult to import something wholesale, especially if not merely every provider of posts but also every single person that ever commented in a community may not have an account on the recipient server - like even if they have a PieFed one would it need to be on the precise exact instance as where the content is being migrated to?
  And even more relevant, what if the recipient instance has different rules than the original? Like defederations? Rules about niceness or illegality of stuff (see e.g. Lemmy.world's whole deal with piracy community). Importing an entire community and keeping it all "live" while simultaneously offering pass-through connections from the old to the new seems fraut with such difficulties. Might it not be better to make a hard break from the old, allowing a fresh start on the new? i.e. community migration is just a convenience feature, it was never meant to do all the things that you said.
  Tbh I don't have anything to do with PieFed's codebase or policies or anything at all - I am just a user like you, sharing my unqualified opinion here:-). I hope it is useful to see this pushback against implementing what I interpreted your words to mean though.
I mean in the form of subscribers like how Mastodon lets accounts transfer over their followers.
- 196 on blahaj tried that forcibly once, it did not go well for them.
  Let's just move a whole community to a new instance without asking!

Don't we already have community migration and backfilling of comments? @rimu@piefed.social

It could work a lot better than it does.
Yes, but it only migrates posts and comments locally to the incoming instance its moving to. What is needed for proper community migration is the ability to all instances to recognise comment migration. And ideally, the automatic rerouting of all subscribers to the new community.
Effectively making communities modular. Much of this is outside Rimus power (due to the Fediverse still being most Lemmy, but one day... one day)

Is there a way to remove posts I’ve interacted with on piefed? Last time I used it, that option didn’t work.