This might be a specific use case issue, but when having split screen of two different notebooks open, the Toolbar at the bottom covers up the page numbers. I know I can move the GoodNotes tool bar to the bottom, which in turn moves the page number to the top of the view, but this is an uncomfortable solution.

So my suggestion is to move the page numbers up a bit when the tool bar shows. This way a person can easily reference the page number when making a master list for different parts of the document.