There is one aspect of Notes that new users cannot be expected to understand - one with which they often make a real mess before they realize they have some learning and organizing to do - namely, arranging the notes in files.
Therefore, I think it imperative to add a function where one selects notes and moves them as a group to another note file. Yes, there are a number of times I would find this useful because of particular projects so it isn't just a "fix a screw up" issue.