I think a flat rate of production and trade increase would work, once a city is connected to your Capital by railroad.
Plus, some, or possibly all districts could get a small buff from railroads.
That would mean your rail network is important and worth investing in, without having to swarm the map.
Plus, some, or possibly all districts could get a small buff from railroads.
That would mean your rail network is important and worth investing in, without having to swarm the map.
