Top notch aesthetics. I thought the diagonal columns in the engine room were really a nice touch, and a clever implementation of the rail system. 4 Stars since it's still incomplete and has a lot of wasted space. Would recommend using colored glass crystal instead of lights on the front and crystals/lights behind crystal glass since you get the same effect, but actually have functional windows and lights without the mass light bleed.
Good luck with further updates on this project, because it's just really awesome looking.