WHAT WE REPORT
We display how many users are assigned to each profile and permission set.
ACTIONS TO TAKE
Having too many administrators can make it more difficult to keep your settings and data secure. Reduce the number of users who have the Customize App and Modify All Data permissions. Assign users those permissions only if they are responsible for maintaining and updating users and settings in your implementation.
Excessive numbers of permission sets make your implementation difficult to maintain. So, consolidate permission sets that have a low number of active users, and delete the permission sets that you no longer need.