It would be interesting to see 'supply contracts' pop up occasionally. A time-limited request for the player to supply enough of a specific resource or item, and if they're successful you get double the normal sell price or something similar.

Could be an interesting way of changing the game ...

I have a few ideas for new train objects and rolling stock.
Inspired by Klonan's KS Power mods and James O'Farrell and Choumiko's Rail Tanker.

All of these items would require the Railway technology, as well as other prerequisites, which would only require Logistics I and Steel. Automated Rail ...