I'd love to be able to have creation/modify date visible in the Onenote pages list.
Best would be to be able to select whether or not the creation or last modified date is shown (in front of the page title on the left), and that you could also sort using either option.
PS. For those missing this feature: Opening the search results pane and selecting "sort by date modified" enables to list the pages almost like I suggested. This, however eats a lot of screen space and isn't very intuitive to use.