I like the idea but I can't say I'm keen on the huge amounts of metal on show. What about a long ship with the base parts attached to a central mass, think like a prison liner but with tower blocks, a refinery, cargo holds, docking bays and maybe a biodome bolted along it's length. Biodome on the top of the ship, refinery and tower blocks on the sides and underneath etc.
I probably haven't described my idea very clearly, I'll have another try at it later.
