Talk about pick the best answer from none suitable!
I voted for the story, because (even though it was half-finished) all the other stuff was either half-finished, or fluff, or both.
It would have been much better had they developed the story and especially the main characters to their conclusions; Nihilus was wasted, Sion was almost as squandered, and Kreia had incredible depth, but to no end!
The other characters were poorly fleshed out, the planets were about the same as K1, and comparing like for like results in K1 winning.