Well, one thing I really want is Meaner and more powerful frigates. I looked
at the model, and they look like enormous space pickles. seriously. they should
get a new, -curved-evil-and-intimidating look. even simply making them bend in the middle would add a Vulture-esque qaulity that makes them more iconic and evil.
and they should appear much later in the game, and boast more powerful weapons, like six particle lancers that cover six seperate sections of the ship. so against many enemies, all particle lancers are used, but against one enemy, only one lancer can be brought to bear.
And since they are pirates, shouldn't they have other salvaged ships in their employment? I understand making the various factions different, but real space pirates would utilize anything they could get their hands on. such as, salvagers, ronin, sapphires, centiurion, etc.
and as a sovereign, it would be awesome to be able to join the pirates. go from bandit, to brigand, to captain, until you are an overlord. to attain higher ranks you would have to turn your back on domina and the CW, but you could command the Kronasauros...

and if you join the pirates before charon, you get to attack the charon Korolov, and then defend your system against retribution from the CW, Volkov, and etc.