hmmm in my opinion, this proposal is too complicated...
I played OpenDev and I must say that many of these districts are already here..
Military- we have a defensive fort
Financial and Trading - market district
but for me it is an interesting idea of:
-Communication district (with a train and bus station) this could be linked to the railroad tracks connecting the cities. Making it possible for people to migrate for work and to spread faith more easily.
-district with a power plant (Electric Grid) but the power lines that will connect the cities, I propose as a project to be built by the player, after all not every city has its own electricity production.
maybe there should be some extra benefits to having electrified districts...
About the factory district maybe it's a good idea to allow the district to specialize it themselves, based on culture, science points, what is mined and how far it is mined from the district and number of "retail" districts.
In my opinion, signing such deep agreements with other countries is a good DLC idea.

wiktator wrote:

hmmm in my opinion, this proposal is too complicated...
I played OpenDev and I must say that many of these districts are already here..
Military- we have a defensive fort
Financial and Trading - market district
but for me it is an interesting idea of:
-Communication district (with a train and bus station) this could be linked to the railroad tracks connecting the cities. Making it possible for people to migrate for work and to spread faith more easily.
-district with a power plant (Electric Grid) but the power lines that will connect the cities, I propose as a project to be built by the player, after all not every city has its own electricity production.
maybe there should be some extra benefits to having electrified districts...
About the factory district maybe it's a good idea to allow the district to specialize it themselves, based on culture, science points, what is mined and how far it is mined from the district and number of "retail" districts.
In my opinion, signing such deep agreements with other countries is a good DLC idea.

This is not that complicated because its like civ 6 district in which we add building but in this suggestion the development is done by others. 

When they will settle they are just giving us bonus.

hmmm i suggest 2 things
1.the player can specialize an industrial district by building specialization-opening buildings BUT
2.If the industrial district is not specialized by the player long enough, the district specializes itself

so, the possibility to specialization of the industrial district will be in the industrial age, as we all know..
But what specializations?
here are my suggestions:
-specializing in food processing (increasing the amount of food from farming districts)
-specialization in commercial goods (increasing the amount of goods in stores which translates into higher profits from shopping districts)
-specialization in the military (shorter unit production period)
-specialization in mining and petting (increases the amount of good from the locations from which luxury resources are extracted)
-specialization in electricity production (produces electricity which is converted into additional bonuses to the districts(if the district is electrified))
-specialization in Hi-Tech (modern era) (produces more goods based on the city's science factor)
-specialization in the production of building materials (lowers the city promotion requirements and accelerates city reconstruction)

There's some potential for corporations to be a huge driving force late-game, in a way that 4Xs don't usually tackle. Manufacturing a unique endgame resource, for example, in a way that forces everyone to spec into a small number and then get the rest through trade if needed. You'd get some wild endgame political scenarios like that, since a unique resource is one of the only things that will force people to pay attention to geopolitics 4 hours into a game.

As for these other ideas, there's a ton of thematic potential but I could see it turning into a mess really quickly. Dealing with nation-spanning corporations could be awesome, but I'd want to see proof of concept in a singleplayer indie game first. If anyone knows a game like that let me know, that sounds cool.