Be able to recruit a party based on your alignment. If your lightside, get only good guys and jedi. If you choose to be a Sith Lord, only recruit Sith charcters and villains from the game.
"Have you come here for answers? There are none. The call of Korriban is strong, but it is the call of the dead. It is fitting you came here."
"The failure is yours, no longer does your voice whisper within my skull, no longer do I suffer beneath teachings that weaken us, and now you run in search of the Jedi. They are all dead....save one, and one broken Jedi cannot stop the darkness that is to come."