Not an urgent feature at all, but something that’d be nice:
The ‘add note’ feature that you have via 3D-press on a note in todo view is nice because it adds a timestamp to the note. I don’t see how this is possible from within the file editor. Yes you can edit notes there, but there is not the same easy timestamp option.
Suggestion: add it to the edit item display, next to the button for editing item properties.