The game's more morally ambiguious, in so far as what you might think is the right or wrong answer, depending on which way you swing, is not always clear. The Exile is clearly portrayed to be more evil than Revan so that may appeal to you. Other than that the game can be pretty easy.
Just be mindful of how dark you go. I won't reveal any spoilers unless you want me to but your alignment will decide which certain characters join you, and what's more your actions influence others for good or ill.