A ludacris mode, something that really makes your company struggle the entire way into the 21st century. A good start would to add inflation into the game, money begins to buy less and less. Earthworks need to cost a lot more as time goes on.

Multiplayer (As in cities in motion multiplayer), quite simple: base game remains the same but you play with a buddy who has a rival transport company on your map. Win conditions could be exclusivity deals with towns; whoever gets 60% or more first.

Better industry AI, just something to help industries pick their supply routes, it’s sometimes difficult to daisy chain industries as they will sometimes turn off because the travel time is too high. It would be nice to be able to add a pointer so that the industry looks at the production of another industry you are trying to link with.

I think this is in TF2 but a way to slow down era progression at your command. It sucks not being able to play at the turn of the century for very long.