A Mirror Steamrunner would be nice since that sucker is locked to Steam otherwise. (Not even on the C-Store.) Maybe in the Mirror Universe; the production error that led to the ship being named Steamrunner never happened and it's Streamrunner.
you can get a mirror star cruiser in the exchange and save the skin in ship customizer then apply it to a prime universe assault cruiser refit. That was my sole cruiser setup until I got the fleet ambassador class.