The answer to your question is cost and durability. To change all our tooling would require a lot of money for tool modifications. Also the cost of the manufacturing each engine would go up. Painting and assembling time would go up and cost more.
I am sure probably some will agree to pay more for this feature. But it is a risk if we raise our diesel prices for example Lionel's Scale ES-44 is $649.99 and ours is $499.95. The question we wrestle with all the time is can we afford to make changes and raise prices without loosing customers. It is an economic fact that you loose customers each time you raise your pricing. In this case the question is how many do we gain and how many do with loose if we for example change the hand rail's and add one more speaker as Lionel has and raise our price to $649.99.
