Okay, consider this. Assuming Aang really does have to give up Katara, wouldn't he decide it was safer to leave his friends behind when he travels into the heart of the Fire Nation? He tired to do the same thing once before in Winter Solstice so it would make sense. Also it seems like Zuko is going to end up helping the Avatar, and I can see him offering to serve as Aang's guide through the fire nation once he's come to terms with himself. So it would just be Aang and Zuko going off to be heroic, leaving every one else in safety. End of Season 2.
Of course, I don't think the rest of the gaang would put up with that for long. So they would track them through the Fire Nation. (Maybe along with Iroh as well?) Then a few episodes into season 3 something perilous happens and the two groups come together again.
What do you think? I think Zuko and Aang both leaving their loved ones behind to persue their destinies would make for a very moving finale.
Edited on 11/29/2006 4:34pm