I enjoyed the growth of the characters. Though I wish they more clearly explained about how much time had passed. Cause some of the time is a little odd. Spoiler ~~

When they get just before the last arc of the story and suddenly I feel like Kyoshi knows everything. When did she learn it? Comparing this to main series it seems like no time especially for someone who didn't really bend that much at all.

 

I did love all the characters though. They felt fleshed out, even the smaller characters had a depth even with little introduction. This was due to world building and the mentioning of events throughout the book with flowed and never felt like an information dump. ~~ Which I loved.