I'd want this as well.
You could preset heading objects which generate an ID based on the content of the heading. And, when a user hovers over the header, an image to the left could appear that allows you to copy the ID as a possible link. Then, you can use that id to create a link in the document that routes the user to the location of the ID. I believe Github Readme's already do this. Would be nice in note-taking for generating a table of contents.