The Battlestar isn't really an RP entity -- much like the Venator. The Firefly is getting a replace. The Spatial will likely be getting a replace eventually (its import-ness isn't blatantly obvious, imo).
This could technically be a pirate freelance cruiser. In the series moya is an exiled Leviathan ship which seemingly has no weaponry onboard. But later in the series we learn that mouse has weapons she just chooses not to use that unless absolutely necessary. But her crew is all exiled beings. Traitors and criminals even royalty onboard.
Well what about the spatial I already have? Its my mining ship and I'm not about to go and buy the hegemony that thing has a horrible mining rate where I mine.