I think book four is needed. It a great way to end the whole show. How?
For one as we realize the Fire Nation isn't corrupt on it's own with
just the Fire Lord, nor by it's self. I think it's going to be important to show how Zuko
reclaims the throne to the Fire Nation. How Aang rebuilds the the Air
Temples and create a new nation of Air Nomads. Just how the gang will
restore balance to the World and how Aang will establish harmony
between the Natural World and the Spirit World. Who wouldn't want to
see that!
And by the way where the Western Air Temple on the map. I see the Norhen, Eastern, and Southern!
