>>107984690The central point of the show and the Avatar himself is restoring balance (to the spirit/terrenal world, to the elements, to the nations, to the people and to oneself) to achieve a perfect state of peace, so if there was to be book 4 Air it should be about that. The war is over and the baddie has been beaten, but that leaves a world that has been ravaged by a 100 years of war, were one of the cultures that holds an element has been wiped out and were the political framework is so broken that the bitternes of two of the nations can easily reignite the war (Not that the Fire Nation wouldnt be happy about it, in their view what they were doing was right).
I don't say that a fourth season should have everything fixed during its run, but atleast stabilized so it doesn't inmediatly explode.