You do realise DTG have put a hiatus on further steam locomotive development for TSW and are not even planning to fix the dire state of those already in the game? Not saying it isn’t worth asking as it shows there is interest but probably not much hope. And word to the wise, if you’re going to post a suggestion, flesh it out a bit to sell the idea. At the minimum a Wikipedia link to the loco and a potential route for it. Also consider evaluating against the DTG LAMP process, which is supposedly used when evaluating route and traction ideas.