This was quite a story, or quite a trilogy of stories. I liked it because first, it depicted Azula's redemption in a believable in in-character way and second, because it's a well-written adventure story. I do have some issues such as some parts of the story beating The Point into the readers' heads, but those don't take away from the overall excellence of the story.
I liked the story so much that I wrote a longer review on my blog about it.
Part 1 about the redemption angle: http://lunafana.livejournal.com/6669.html
Part 2 about the writing itself: http://lunafana.livejournal.com/7009.html