I loved this game, incomplete ending and all. I got it for PC, and had been following the posts here, so I was already aware of disappointment at the ending when I started playing.
It's true that you see the "Big Bad" coming from a mile away, and it's true that there are many things about combat that could be improved, but the story totally redeemed the rest for me. As I watched the end credits, I wasn't so concerned with the way it ended as playing again as a DS -- and I *never* replay games right away, even when replayability is one of the big draws.
Could this game have been better? Heck ya, but even games that are praised from the rooftops (like PS:T, the Fallout and BG games, for example) have flaws that could be fixed. The story and characters this game did have were as good or better than any of those other games, and even managed to add depth to the story of KOTOR1, which I would not have expected.
Right now we should be looking at the bigger picture -- what comes next for the KOTOR series. We should be sending a loud message to LucasArts that we want an expansion pack for KOTOR2, and we want Obsidian to develop it. That's the petition I want to sign, because I think it's a far more realistic goal to reach for.