To start with a big thank you for this mod and how well it got developed.

I want to discuss the special districts that we can build after a specific time in the game meaning the "secondary districts":

• Local Stores
  
• Spaceport
  
• Workshops
  
• Local Industry
  
• Production Hub
  
• Academy
  
• University
  
• Logistics Hub
  
• Bureaucratic District
  
• Asteroid Belt Mining
  
• Universal District

As of now the research itself is very random and because of that we don't have the ability to use your special districts as much as possible.

I suggest you add more tiers to these special districts and make them free at the start of the game in a way that they don't require research. They should be weaker than your primary districts and also the vanilla districts and investing in them will only be from necessity. The balance should be in a way that they won't be stronger than the vanilla ones and they only become viable with tier2 or tier 3 in research

In terms of tier numbers, I suggest you make it so that you have 6 tiers of these districts

• Tier 1. It's the basic one that is weaker than your normal starting districts and investing in them is just a matter of necessity. Also, if you have only tier 1 of these districts they won't eliminate each other when constructed, meaning you can build all of them on the planet. Also, these tier1 are already researched at the start of the game. In other words, this tier should be like 70-80% weaker than your already implemented tier1.
  
• Tier 2. Will be required through research and they will be 2X times better & upkeep than tier 1 and again they won't eliminate each other when you build these districts, meaning you can have all of the 11 districts on one planet at the same time on tier2 or tier1.
  
• Tier 3. Same as tier 2 but it will be 3X times better & upkeep than the tier1 that I just mentioned above. In other words tier 3 should be your current tier1 that you have in the mod. Again, building tier 3 on the planet won't eliminate your option to build a different tier 3 districts on the planet.
  
• Tier 4. It will be 4X times better & upkeep than Tier1 that I mentioned and it can only be just one tier 4 on the whole planet. Also, this tier will start to give small amounts of housing.
  
• Tier 5. It will be 5X times better & upkeep than Tier1 that I mentioned but this tier will remove all tiers on the planet itself(secondary districts) and it will be a dedicated planet towards that specific area. They will closely assemble city districts in terms of housing.
  
• Tier 6. Same as 5 but just 6X times better & upkeep than Tier1. All districts on the planet will be removed (secondary, primary, and vanilla), in other words the planet will become an Ecumenopolis in that specific field with special effects if you build all the planet with those districts.

One other thing that I want to discuss is that some of your secondary districts should give different/special effects when changing tiers. For example, an Academy district at Tier 6 will give you special stuff and not just making your pops better at what they do. Here is a request from me that I would like to know exactly how your current secondary districts affect the planet and what exactly do they give when constructed. While in-game sometimes these things are unclear until you just make the district and you go in the population tab to see exactly what are the people making.


So that was everything about the tier numbers that I suggest for your secondary districts.
Regarding the primary districts that you represent in the mods, I suggest we make similar things. For example, if your planet has Nature Reserve via technology we can make the planet have tier1/2/3/4/5/6 of that Nature Reserve until the whole planet turns into an "Ecumenopolis" of Nature Reserve. In other words you just copy those districts and replace the whole planet with it.

Down below is the list of primary districts and a cost for you to research them via a special event once you find them with your research ship (except is Archeology district). The event itself will be costly:

• Nature Reserve - Requires huge amounts of engineering/physics/society to finish
  
• Tourism - Requires huge amounts of engineering/physics/society to finish
  
• Gardens - Requires huge amounts of engineering/physics/society to finish
  
• Eco gardens - Requires huge amounts of engineering/physics/society to finish
  
• Research Complex - Requires huge amounts of engineering/physics/society to finish
  
• Cloning Facility - Requires huge amounts of engineering/physics/society to finish
  
• Robot Assembly - Requires huge amounts of engineering/physics/society to finish
  
• Drone Lab - Requires huge amounts of engineering/physics/society to finish

After the research you will want to build them, well...it's won't be easy for these districts because in a logical sense they happen because the planet looks like that:

• Nature Reserve - Requires terraforming with huge energy cost to make one district
  
• Tourism - Requires terraforming with huge energy cost to make one district
  
• Gardens - Requires terraforming with huge energy cost to make one district
  
• Eco gardens - Requires terraforming with huge energy cost to make one district

As for the rest of those districts, in order to build them, you will just need lots of alloys/minerals/energy:

• Research Complex - Requires huge amounts of energy and alloys
  
• Cloning Facility - Requires huge amounts of energy and alloys
  
• Robot Assembly - Requires huge amounts of energy and alloys (mandatory tier 1 for gestalt ai?)
  
• Drone Lab - Requires huge amounts of energy and alloys (mandatory tier 1 for gestalt ai?)

Another thing that I want to mention is related to the "Ascendant Housing". If you find a planet with "Ascendant Housing" again you have the ability to research it and implement it on your own planets but with heavy cost. This one won't be tier-based but with a special planet edict it will replace your vanilla game city districts.

One thing that I forgot to mention. Can we please have a special district that is specialized in making buildings faster in the planet and also all other modifiers like special edicts that take time?

As of now, your mod works perfectly with my collection:
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2089433274&fbclid=IwAR2xBByqVCWRrbUerlZWCV08IZ171gfm7L-KILOC9c2iV90W4WPFrcx5EUA
So please keep up the good work!