Join Date: Mar 2013
Location: Canadian national, US for university
This looks really cool! As far as aesthetics go, if you're looking for an Imperial station it'd probably be grim and very utilitarian, lots of bulky airlocks and buttresses along the walls (which might be useful as cover from a gaming standpoint). Maybe include a shrine area for techpriests working on the station, cafeteria, crew quarters. Think almost like a submarine- this place would have to be a "home" for the crew as well as performing its functions as a station.
For ruins or a derelict station you could do "decompressed" areas that if you'd like could count as Difficult or Dangerous Terrain, maybe chemical leaks, spraying coolant or corrosive substances, or even electrical/plasma conduits that've been broken by weaponsfire or impacts. Could even do warp-afflicted areas, giving you a nearly limitless palette of ideas to choose from. Lots of potential for in-house rules like low gravity affecting movement speed, or even dangerous areas that are tactically advantageous but could suffer from catastrophic failures if the unit using them takes damage- only takes one bolter shell to blow out an entire observation deck, after all.
Looks like a really creative build- I love the space side of 40k- good luck with the continuation, and be sure to post more pictures!