Well come now... they cant just leave us sitting in the water. I have a feeling that if they don't make a season 4 "air" they should at least create an epilogue to close all the questions. Like a five episodes or movie that will answer all the remaining questions. rebuilding the air temples? Zuko's mother? return to the south-pole? a new avatar? Aang and Katara? and so on. Everyone who likes the show should agree!