I would love to build railroads across the map and to outposts in your upcoming mod, and to build cargo stations in your base that can park multiple trains. Trains act like a caravan. You'll need at least a conductor, but extra pawns increase loading speed and provide extra defense when you're being attacked by bandits! Yes!

Train robberies will act as random encounters while your trains are travelling across the map. You'll often have to haul or dismantle an object blocking the tracks when you are attacked. (Uh oh, a mech hive landed on the section in front of us!).

Worried about settlements not having enough gold to buy your shipment of human leather dusters? This will also introduce a new trade hub settlement in the game. You can build your tracks to them and they'll have a lot more money than other settlements on the map. However, you must buy a trade license from them in order to be given permission to trade. The licence is more expensive the closer you are to the hub.

You can also research different trains. Steam powered is always the earliest big train you can use. Chem fuel and electric are more advanced options. Nuclear trains? Turret mounted armor trains?. If you're looking to send a few colonists down a line with a few resources, a handcar is a resource light option that travels a lot slower but does the job!

That's all the ideas I have at the moment! Hopefully you think they're great ideas too.