Made some change to my ‘Fallen Empire Surface Building’ mod. This mode allows you to be those three buildings everywhere with reduced cost but they don’t produce any influence.
Basic cost is reduced to 300 energy 1000 minerals and 10 influence.
To build these buildings you still need to upgrade to them from level V buildings but this mod also allows you to upgrade all level IV buildings to level V without having an Empire-Capital Complex.
Steam Workshop ID: 724797030 Credit: Type-2020