if you scroll a little ways down the hb section you can find a morph brokerage i made

I think in EP this is somewhat less of an issue, as most Morphs can easily move in vacuum and fighting your way along the truss section of a ship can be an interesting scene in a interesting environment. A comparison that comes to my mind is a dungeon and a little farmhouse with fields around it as you would find in any fantasy game. While the dungeon has lots of rooms and trapdoors and such things the farmhouse has only a few rooms but the open spaces make it interesting for infiltrtion, combat and other things. A spaceship might just have a few rooms in the habitat section, but there might be dozends or hundrds of cargo containers, delicate com equipment, glowing several 1000K hot radiators you don't want to crash into, even hotter coolant in pipes you don't want to rupture, a tiny but unrelenting "gravity" along the spine during acceleration, making injured people or grenades fall down ever so slowly, gigantic tanks full of compressed or -even scarier- highly explosive metallic hydrogen. While al big percentage of the ship's mass and volume might be propellant, there is still a lot of interesting "surface area".

Ships in EP don't usually need to escape a deep gravity well, though. You won't ever find one lifting off from Earth or Mars, just moving from orbit around one planet to orbit around another. So they won't need quite as high of a fuel to mass ratio as today's space shuttles.