I'm a little disappointed with the top-down view and the slight disproportions, but other than that, amazing job recreating the Stealth and Kestrel variant. I have a proposal that you should consider for your ships. Try doing a, well... shorter version of some of the rooms. this would allow you to easily access the bottom levels of a side-view ship, and allow you to even side-view it in the first place! You could have access tunnels instead of rooms, if you would prefer. that way you could fit in some more rooms in the side-view, and still grant the ability to make a base for the rooms to start of with. Just a long line of blocks on the bottom.