Concept is simple a self-sufficient ship with everything on board to never have to go to a station again (in case there will be something like a refinery for fuel for ships which i dont think will happen [in this case it will have parasite craft doing this task: getting fuel]). It would just travel, an endless journey to wherever it takes you. I just find the idea really nice of being stranded in space and all of a sudden you get picked up by whats basically a gaint mess of parts like the sandcrawler. The ship would have no real purpose othen than maybe carrying cargo or long range transport of endos, but thats kinda obsolete with the implemention of warp gates.