I got it Saturday and I'm almost finished, and while it's hooked me, I'm kind of disappointed with it.
Fun to play, but the characters in your "party" dont' seem to nearly have the depth that they did in the first. I mean, you always have the same identical conversation with them, except that eventually you might get a different answer if your influece is high enough. I liked the old method better (which was like NWN), when they said something new about themselves ever level or two that you gained. And when they get added to your party, half the time it's like there's no introducetion, boom, they just get added.
Plus, the game was too front loaded. Too much on the first planet/base, which was excruciatingly boring. Too little of wandering around the other planets kicking ass with a lightsaber.
That said, they really extended the game engine itself. It's fun tweaking out your characters. And I do like how you get to play more of the other characters, not just your main guy.