I think that Avatar: the Last Airbender is one of the best animated shows of all time. I read this graphic novel sequel story cautiously, as I was emphatically not a fan of the Legend of Korra sequel series, and I expected any additional stories to disrespect the fantastic world and characters and details of the Airbender series.
BOY, did I love this series!!! I have a few things I wish were different -- I actually wish that Azula -didn't- join the group, I liked that she was sort of "left broken" at the end of the Airbender series, as an example. But that's pretty nitpicky, honestly. This series is fantastic. This brings up all the "what's next?" questions I had at the end of the Airbender show. Of course Prince Zuko is going to have struggles as a political leader now, and this series shows all of that stress and all of the hard choices he's faced with. Of course there are challenges with blending families. This series is smart, mature, funny, and doesn't take the easy way out with any of the issues it tackles -- issues affecting smaller groups, and issues affecting huge-world-scale stuff.