Here's my advice for dovetail games if you're going to add The Flying Scotsman to train Sim world 4 then why don't you ask some of the most iconic American steam engines too for example I can name seven Stars I would add Big Boy 4014 Union Pacific 844 n&w j 611 Southern Pacific 4449 Perry Marquette 1225 nickel plate road 765 and potentially C&O 1309
DTG have stated quite clearly and it should be pretty much general knowledge, they are not doing any more steam traction for TSW. Nor are they fixing what's already in game.
and still people suggestion more steam.. DTG might as well be speaking latin. Although, DTG stated they weren't doing steam atm and that 3rd party devs are open to bring more steam to the game
But I don't see a 3rd party bringing any US steam to TSW, especially with how bad the system is ATM. Unless HIS gets Rick Grout (G-Trax) to make a route like the old B&LE for TSW as one of their future routes (But I doubt that, HIS only focused on post transition era routes.)
I really love how I can predict the American Steam Engine before even looking at the page ha-ha, BIG BOY.BIG BOY. BIG BOY. BIG BOY. HA-HA so stupid. You understand people Big Boy was never the Biggest Steam Engine Ever Built! Pennsylvania S1 was.