Bring back a quick two-click "sign-out" path.
In W2016 TP5 signing out requires, Right-click - Click - Click
I prefer my RDS users signing-out rather than disconnecting. It makes system maintenance and software upgrades easier.
Make a shortcut to a batch file that does the logoff, call it LOGOFF, put this in All Users Desktop, 1 double-click only, done.
Tim Cerling commented
It only requires two clicks on my TP5 installation. Right-click the Windows icon, move the mouse to 'Shutdown or signout' which automatically opens a menu containing 'Sign out'. Second click on that and I am signed out.