the command is there since game release - and its not the only command that has no sense/function in the moment. Just a look in the future
And yes, as the cockpit texture of the new E-4 is saying it has autoprop - it shoud get one , or 1C should edit this texture
Time will tell.
The supercharger handling of the Ju87 is also reversed to its cockpit texture (at least till the BETA that i dont use).
low blower is at "Automatik" and automatic shifting is at "Bodenlader"