"Total" row on the "Top Fans" chart
My sugestion is to add a "Total" row on the "Top Fans" chart. I have made a picture of how it would look like: http://i39.tinypic.com/2ijq1kj.jpg
This feature would allow to easily count how many comments, mentions and likes the page got on the set time period (week/month/all/custom) and would greatly help building the monthly report for my clients.
Thank you for taking the time to mock up something to help convey your idea. We have something like this for the Twitter product and we are reviewing this idea for the Facebook side.