In my experience in Africa, where marshallers and helicopters mix, chaos usually reigns anyway.
The marshallers invariably try to position non wheeled helicopters as aeroplanes and get most upset when we refuse to try to hover downwind at MAUW under the wing of a Russian transport aircraft, half on and half off the apron, next to the rubbish bins full of easily airborne plastic bags and large pieces of cardboard.
Most of the time they stand there waving frantically to cut engines for the whole two minute idle time a 407 needs before shut down (we are not taxiing at a low power setting but usually near to maximum power).
To give them their due, when they come angrily over and berate you, they usually listen to the explanation and you can see understanding dawning. Doesn't stop them doing the same thing next time though...