A protrusion into the aisle for electronics can be disguised / hidden by adding passengers in the surrounding seats. I remain of the opinion the the MTH Team can rise to the challenge of producing an open trolley car. Perhaps the biggest hurdle is convincing Mike Wolf to invest in the non-recurring costs to get such a trolley into production.
Open trolley cars have world wide appeal, so I think that market is ripe for an Osgood Bradley type of car in the MTH Rail King product line.