Since we havent gotten any american steam, i think this would be a great loco to add to TSW, maybe in a new route or just to be bought in general.
While the Triplex would be way awesome, we would need an Erie RR World War I-era (pre-1920s) route. It's not going to happen. The Triplexes, while very powerful (supposedly capable of handling 640 freight cars!), were not very fast. The Erie RR Triplexes could only make enough steam to run more than 10MPH. The engines were so powerful that they broke couplers on freight equipment at the time.
Yeah Nice idea Na not going to happen, DTG has already stated no more Steam, that is unless "A" third party wants to create it and that would mean learning how the current Steam content was created and learning the Simugraph as I understand it.