We used to have help desk software that had a Requester History tab that we found very useful.  It would be a nice feature to add to Service Desk +. 

 

When I am viewing a ticket, it shows me Request, Tasks, Resolution, and History tabs.  It would be nice to have another tab that shows the Requester History that shows the history of Requests for that Requester.  This is a quick and easy way to know the Requester when dealing with the user.  I know you could do a search but this would provide a quick and easy way to switch between the request and their history.