Provide a small amount of user statistics...
Under the USER & PERMISSIONS tab, could you provide a small amount of user stats. Such as how often they access their sites, most recent publish date, etc. Thanks!
Another idea for this would be to add the ability to see if a user is currently logged in and editing a page. When and by whom the last 5 or 10 pages where edited. Maybe the ability for an admin to send a message to a user currently editing a page.