I've searched for something similiar, my appologies if I've missed it. I have a concurrent licence manager which is pretty easy to manage. But I also have single liceses for ArcGis and it seems they are steadily increasing in count. Not sure if its possible. It would be really convienent to have with MyESRI where my licenses are kept in your system to allow the customer to associate a license/extensions with an assigned workstation name. It would be convient to quickly find the associated file for reprovisioning when needing to move the license to other workstations. When selecting an individual file it could display it in a tree format
Hostname_
License Keys/extensions included.
Location:
