I have several “railroad” and “transportation” games. But the one I keep going back to is OpenTTD. The graphics are beyond horrid, laying track is a PITA, you can’t rotate the map, trucks are useless (if they’re making money, I replace taken-over trucks with a train ASAP), minimal animation. However, gameplay is has.
Give me a modern looking/acting Railroads!/OpenTTD and you’d have a winner. (Well, I’d buy it in a heartbeat.)
Many years ago, there was an oil company ad and their tag line was “If you don’t have an oil well, get one!” Still remember it.
The ability of building your own industries to complete your own transportation chains, instead of making do with what you’re given, would be a huge bonus. (“If I just had a factory about here…”)
(Gee, I don’t want much, do I?)