This would work for simple typo fixes. Could even be just kind1s like "s/bitocin/bitcoin". You could issue these manually if your client didn't support a custom UI for editing, and read those manually if your client didn't support magically editing the original post in the UI. Or is this a dumb idea?

Clients would have to self-impose a limit on these though, we can't have giant edits.

Hopefully it remains a niche feature.