Like the feature “Memory, X months ago”, having the option to create a response of a new journal entry with the current date, based on the past journal.
Along with that, the new journal entry can have a small preview of (or the title) the past journal entry somewhere at the top that can link to and “jump to” the old journal.
I would really like that. Often, when I see a random memory in the timeline, I realize that I have changed my mind on something or have gained new insights and I’d like to write an update.