This is a pretty standard 3D modelling strategy, unsurprisingly, called "box modelling". You can create an incredible amount of things with box modelling. Including, obviously, a lot of spaceships. I built several crud spaceship designs with box modelling back in school. The main key advantage, is all of your 'parts' are built off of a single object in the editor, and aligned perfectly.
The other thing though, you can do to a box modelled project, is round all the edges to varying degrees, and end up with something looking much more fluid and amorphous. However, I suspect the results would be far more unpredictable if he through something like that into this script, so it'd be difficult to go there procedurally.
The other thing though, you can do to a box modelled project, is round all the edges to varying degrees, and end up with something looking much more fluid and amorphous. However, I suspect the results would be far more unpredictable if he through something like that into this script, so it'd be difficult to go there procedurally.