I read somewhere in the forum that a USA pak was in the works. I also read that gameplay with certain themes will not be explored by the dev team [and i agree]. Natural and manmade disasters (war, namely) are off limits. 2 of the 3 scenario ideas for a USA pak discussed in this post are themed around the aftermath of the U.S. Civil War, the immediate post-war years (1865-1870). The scenario ideas are positive in nature, but dark in subject matter. I hope this doesn't disqualify the ideas.
Transcontinental Railway: March 4, 1869 - March 4, 1877.
Ulysses S. Grant's Presidency. Connect San Francisco to New York City WITHOUT travelling through or connecting the recently defeated Confederacy. This is the era of train robbers, so be careful! The actual distance from San Francisco to New York City is 4672 km! Big map! Also, there are very few cities west of the Mississippi river at this time. You will have to connect small cities over vast distances of 500 km or more the further west you go as part of your challenge.
The Great Depression: November 1, 1929 - December 31, 1938.
Survive without going bankrupt, that is your only objective. You start the scenario with a small transport company already placed on the map for you. Your company is connected to very few cities/industries of very questionable size. Passenger routes are NOT connected to tourist attractions or city halls. You start heavily in debt [-100k $$ or more], and heavily leveraged [very low net wealth]. Minimal industrial supply and demand. Minimal passenger demand. The Public Service player is disabled. 1932, 1933 & 1938 are the most difficult years to survive. Expanding your network is necessary to survive, but the risks are financially fatal. This is a scenario for experts. Survive the Great Depression in America for some serious Simutrans bragging rights.
Reconstruction: May 1, 1865 - December 31, 1878
Rebuild the destroyed rail network and economy of the recently defeated Confederacy. You must connect 30 major Southern cities to a passenger and/or industry network and be profitable before 1879 to win. Also, you must deliver x amount of industrial goods, and transport y amount of passengers by 1879 to win. It's approx. 2130 km from Richmond, Virginia to Houston, Texas, cities at the extreme opposite east-west ends of the Confederacy, to give you an idea of a game map size.
Possible industries to explore for this scenario are: cotton, tobacco [if permitted by the devs], peanuts, peaches, pecans, oranges, beef & cattle [Texas], distilled spirits [if permitted by the devs], shrimp, and corn.
Dev/modder notes: The South was a predominantly agricultural economy at the time of this scenario, and cotton was the predominant crop produced. There should be no industries normally associated with the North in this scenario. No coal, oil, iron, steel. No metallurgy and no commercial manufacturing, per se, at this time in the Southern U.S. states [glass containers for milk and or distilleries would be ok].
Sounds fun, I assume you mean scripted scenario. 8)
I can take care of the script code, but I would need help with the maps and texts/translations.
The truth is that I am very excited to see that someone else is interested in the scenarios, I would gladly spend some time doing script code.
Some time ago I proposed an idea of a campaign/story mode for simutrans, I wanted it to be something compatible with the main paksets and a scenario with multiple maps (inspired by The Battle for Wesnoth, a turn-based strategy game), I also wanted to control the map generator using script .... but all this never came to anything I'm afraid, and I'm just forgotten.