This could be on all platforms and could allow players to make their own Scenarios. This can be a separate menu after the player clicks the preferred route. Example: LIRR. A Train leaves Penn Station at 10:34 AM, when arriving at Woodside, the player is informed that there is Construction on the line ahead and must slowly operate the train through the area. The Train Terminates at Jamaica and the player must take the train to Hillside Yard.
I'm sure that this would require the editor; that said, a couple of intrepid pioneers have managed to "make" scenarios by high-jacking engines or trains and giving them new work to do. Since these pseudo scenarios, of course, do not award points or medals and they don't mastery, either; so anyone who can't live without that stuff won't find much pleasure driving them. Let me see whether I can insert a link to one of these pieces of genius and sheer determination: (nope! you'll just have to open Steam, click on "Guides", and hunt for them.