Rework train stations and airports

I am posting this to express better an idea that I tried explaining better in previous threads.

Currently Train Station and Airport are decent districts which are really good for logistic value but surely (in yield term) not as impactful as they actually were in our world's history, so I'll be proposing a rework for both districts:

Train Station

• +1 Pollution per Coal on Empire
• +1 Industry per Coal on Empire
• -10 Stability
• +5 Industry per adjacent Makers Quarter  
• Generates rails towards neighboring Train Stations (Rails allow to travel instantly from one Train Station to another at the cost of 1 Movement Point)
• Can be built once per Territory.
• +1 YieldType from every YieldSpecialist in bordering cities connected through railway (but the game should divide the YieldSpecialists among the territories; if you have a city "A" connected to a city "B", which has 20 pop in total with 5 YieldSpecialist for each of the 4 YieldType, in the territory "b" where there's not the Main Plaza but an Administrative Centre and 3 Farmers Quarter providing in total 3 Farmers Slots, "A" will just gain 3 Food from "B" since in "b" there are just 3 Farmers; if "A" will be connected to all the territories of "B", in addition to the 3 Food it will also obtain 2 Food, 5 Production, 5 Gold and 5 Science)
• (maybe) it should lower the price of the part of a land Trade Route when passing on a railway 

Airport

• +1 Pollution per Oil on Empire
• +1 Pollution per Air-Trade Route on district
• -10 Stability
• +5 Money per adjacent Market Quarter  
• Allows to travel instantly from one Airport to another at the cost of 1 Movement Point
• Can be built once per Territory.
• +1 YieldType from every YieldSpecialist in other empire's/IP's cities with an airport and an ongoing Air-Trade Route (the game should still divide the YieldSpecialists among the territories but it does like counts all the territories in like a 3 territories range of the airport if connected trough railways otherwise it should just count only the territory where the Airport was built; it should also count the YieldSpecialists of the territories in range that are not of the same city where the airport was built in)

Note: I kindly remind you that, since 1M pts ideas shall potentially make its addition to the game, an upvote would be really appreciated.

         Thank you for your support :)