I have a MTH PRR cabin car that has a moveable flag man on the rear of the car. When you blow the whistle button on the transformer he moves..........people love him when i would think moveable figures in the cab of a steam engine or a diesel would be too hard for people to notice. But if they put them in for no added cost I'd give them a try.
JohnB
I agree, to a point: visitors to my layout - or any layout - are generally overwhelmed by tall the stuff and the movement and shuffing and diesle rumblings. Too much to take it.
But I would notice, and watch, and enjoy, and my trains are mainly for me, so It's still like to have them.
I may try my hand at building some, on down the road, when i complete several current or currenty planned projects.