They're working on having the option of "chopping in" an existing ship to use as components for a new one. I guess there are a few wrinkles to it, like "what to do with bits that aren't used in the new one", that they have to decide where to go with. A "disassembly hall" that will (for a fee) just deposit all the parts into your Station Inventory would be great though. Needs Inventory 2.0 though, I would imagine, since it would be easy for a large deconstruct to exceed your storage slots...