Could add Hall classes, Tank engines, railcars, and more steam locomotives, The could work if a tool system has been implemented like shovels for coal, water tower functions, and cleaning out the fire box, stoking rods and more.
that is something that remains at the bottom of the box at the momment. Its been suggested many times but no word on progression however. I am not sure what is the real reason tho.
I'd love steam locos. An LNER A3 (Flying Scotsman for example) or A4 (i.e.: Mallard) would be amazing for a British route. The US and Germany have nice steam locos too. I really want a Big Boy and Challenger on UP Sherman Hill.