Mar 8
Save Backups / Note History
First as a candidate for a plugin, later fully built-in, this could save notes on a regular basis or after every change + x seconds delay (to get multiple changes in) and the command bar could display the list of snapshots. Later this could be a popover button displaying the same information.
The problem is how to make this disk space-friendly. Copying individual text-files is ok, but if it has images, what then? Don't make backups of the images?
Completed
Since Noteplan already uses plain text files, this can already be handled by iCloud/Dropbox as long as you don't use CloudKit. So I'm not sure this is worth it. You could add a ShortCut action that exports the database a zip file which users can do with what they want.