I am wondering if it is in the perview of the devs to implement full fledged cities into the game at some point, they would function kinda like trade stations, but bigger, with more and bigger shops and perhaps even special quests you could get there. Now you may ask, why do we need a city? Answer: because cities are awesome, they would dwarf in size any structure we have right now. Now i don't want a city on every planet, perhaps one for Xirax and one for Polaris in the system, Polaris one could even be a large station ala Citadel from Mass Effect. I am fully aware this is nowhere near priority right now, but maybe some day.