[Remote Desktop] As a remote admin, have the ability to see the screen of the currently logged-on user-the end user's actual active session
Remotely being able to see what the local end-user is seeing on his/her local screen is incredibly important when troubleshooting activities occur, especially in air-gapped industrial control systems. There are commercial applications that allow this (i.e., Dameware, etc.), but it would be a VERY useful benefit if this capability was a configurable capability in Windows itself.
Jens G. commented
I guess what you want is either RDP shadowing, or simply Remote Assistance. Both would be very handy to have in WAC.