More than 50% of the work I do on a remote computer is done via the command prompt.... be it OSX, Linux, or Windows.
I would love to see just_that_option for unattended guests. That way, I can do what it is I need to do on their remote computers, without having to interrupt their work.
Granted, it's currently not an issue for when I remote support Linux and OSX guest, I usually have a site-to-site VPN for those customers anyhow and can ssh into those machines, but for my many Windows customers this would be a great feature.