I thought the original storyline was the second best of the series. But it was the only thing that made me kept on playing. The Disney storyline - I give it props for sticking with the memory theme but they were EXTREMELY boring, repetitive, and useless (it's not like they can take out the Disney anyway). This applies alot to Riku's story, which was a double whammy. I HATED the Disney, I was rushing through them just to get to the interesting parts. As for the gameplay, I like the card system, since it's not as button mash-y, and it's strategical. It's up to you, though, you can still button mash. Exploring the area was also a pain because of the random encounters, so that killed the fun out of exploring. Regarding Sora, while that was the game he was probably the most mature, I also couldn't stand how he acted like a jerk towards Donald and Goofy. Yeah, Sora, go run off to save this girl you JUST remembered and ditch your friends you've been fighting with through thick and thin. :|
So yeah, like most people here, the Organization and Naminé were the only things that really kept me going. Everything else? ehh
i play KH for its gameplay
pretty much