Yes I believe engineers should leave all the controls in the "normal position"!
So when an aircraft is handed to me by an engineer I will expect the following;
Throttle levers at cruise,
QNH set to 1013,
gear selected UP,
Oh and the pressurisation SET! That should blow your hair back when you open the door!
After all that is the "normal position" isn't it?
Normal - is a relative term. Normal pressurisation at ground level (where the engineer works) is OFF.
If a switch is in a cockpit then it is there for the Pilot(s) to operate, not the engineer. If the switch was in the engine nacelle (where the pilot can't reach) then it would be the engineers responsibility!