Going to try thinking up some function parts off the top of my head (probably not entirely accurate to say) that a space station built in the tech editor could need. Looked at the Tech Web concept pdf from the wiki (it's gathering dust, but is still informative).
-Solar Panels: Because routine flights to provide fuel or batteries to the space station is just impractical.
-Nuclear Fission/Fusion Reactor: An alternative to the above. Since so much energy is coming from mere atoms, fuel would last longer. Just be ready for a reactor collapse.
-Cylindrical Corridor: The player could use this both as a "master corridor" the other components are positioned upon, or for smaller "hallways." Could also work as rooms.
-Spherical Room: A bit like the "multi-purpose room" in Subnautica, an ideal structure to have other function parts grafted onto it.
-Docking Bay: There should be a way in or out for people, in addition to just allowing a spacecraft to dock for repairs and deliveries.
-Reinforced Window: Provides visibility, not just to look down at home, but also so that crew members can see the exterior of the space station without needing to EVA.
-EVA Door: A bit more than a door since airlocks are involved.
-Radio Antenna/Dish: Essential for giving orders to the crew in strategy mode.
-Life Support Module: Very important, no idea how it works. The ones in Civilization Revolution and Star Wars Battlefront 2 look pretty, though, so there's that. I'm guessing all life support things look like glowing green tubes?
-Wall Light: Probably should have thought of this earlier. Unless your species uses sonar, then they have it easy.
-Thrusters: Just in case you want to reorient or relocate yourself in a pinch.
-Solar Sail: An alternative to the above. The effects aren't as fast, but uses a little bit of electricity instead of a lot of fuel.
-Computer Mainframe: What a crew member would walk up to and press buttons on to make stuff happen.
-Power Grid: Probably not needed if the player isn't going to wire things up manually.
-1500 Megawatt Aperture Science Heavy Duty Super-Colliding Super Button: Cube- and button-based testing remains an important tool for science, even in a dire emergency.