Count of users

on the user admin screen (and associated 'user' areas of the Product and Product lines) it would be helpful to have a count of users in each column.  i.e. for 'Paid Seats' I would like to see (37) underneath that column.

In the product/product line area, I'd like to be able to collapse/rollup/count the users within the given categories (Reviewer, Viewer, etc)