Having just finished the game on a friend's xbox, I have to say that I will still buy the PC version when it comes out. Sure, I disliked the ending. I sure as hell would have liked more time to talk to my NPCs
. And yes, I did feel the romances were slightly incomplete, and that the dialog trees really did dry out too quickly. But still, the story was captivating in and of itself, it had twists and turns, and didn't just read out like a 5 year old's picture book. I found from reading the opinions of different people that it was mostly the anticipation of playing as Revan again that ruined the TSL experience.
When you look at the game storyline, there isn't much that isn't explained or that can be easily inferred from what the characters say, the only thing that was left out was the fate of Revan, and even then, it still made sense to me, especially since Obsidian made it possible to follow the KotOR I story regardless of Revan's gender and ending alignment, which is harder than it looks.
I am hoping they will fix most of the bugs when the PC version comes out, or will at least patch it, however, but even if they don't, the game has a lot of replay value, the influence system guarentees it, hence it will probably be a long time before I finish with it.