My one objection to the design of the ship is that it is a very 2D dungeon style of maze, which doesn't really make sense for a manufactured ship.

Of course, if it were a converted asteroid, you'd probably want to leave substantial amounts of core material intact to maintain structural integrity.

My first impulse was to redraw most of the maps for the initial adventure to try and get something which felt more like a spaceship to me than a typical fantasy dungeon.