I wouldn’t mind seeing a line of passenger cars be released. Combination or baggage cars, sleepers, dining, vista domes, and observation cars.
Maybe a different livery every year or two?
I also wouldn’t mind seeing more scale vehicles like cars, pick ups, station wagons, and tractor trailer rigs that are to scale. Everything from the 40s to current. I know they have some but, in my never to be humble opinion, not enough. Lol