Primarily, it serves to emphasize a particular plot point of the TI prequel Operation : Ragnarok wihout being glaringly obvious about it. I was fairly proud of the way it had turned out, so I decided to show it off. As far as what it does outside of the basic realm of its target purpose, it could be used for fighter storage or repair where you have no fighterbays (like Light installations - I'm sure you could put basic drone intelligence into these things that would have them capable of docking alone when you needed to use them).
So essentially, it kind of sits there, like the Ganymede does.