I realize it's probably not a trivial task, but a neat anti-lock-in feature would be if you could move an account from one instance to another without having to tell your followers to manually follow the new one.
@seashores There's an export/import feature where you can export/import your follow/block/mute-list, but that's about it.
I would presume that exporting toots and favourites is probably the much easier task compared to migrating the complex web of relationships across the fediverse.
@nivex That's just one use case I envision. Even though "building a personal brand" is among the worst memes of the past decade, the fact is that having a meaningful following creates unpleasant social pressure to avoid moving even if your instance takes a turn for the worse.