I'm believing for photo-etch safety tread walkways and no zinc- shrink truck sideframes!
Also like to see rubber (insulation matl.) air hoses and MU cables on the pilot ends. And how about six, tiny, scale D47 traction motors with 65:12 gear sets on each axle, working interior cab gauge lights, a fully functional crank hand brake on the long hood......ohhhhhh never mind !