Provide a simple tool outside of ArcCatalog/ArcMap that will allow a user to view a list of users that have licenses checked out. This tool would only provide the list and not allow any changes to occur. This tool could then be installed on all user computers and not require admin access to the license manager. This would be a "ArcGIS License Viewer" from the user's perspective.
This idea has been merged with Add new functionality to License Manager - Usage & Analysis Tools.