I don't know I think Toph is pretty much done and?? served her?? point or story line( at least for now) ??at this point in the game. They needed her to join to teach aang how to earth bend and now he no longer needs her he needs a firebender. They don't don't have enough time to go back to her hometown and get her with the comet and solar eclispe coming. I think they did the whole letter thing ??on purpose just to?? have an excuss to get?? her out of the picture. I mean ??the whole letter thing?? and how she reacted to it was out of her character to me. I mean the whole reason she ran away in the first place was because her parents didn't understand her not meation the fact that after her dad saw her earth bend he freaked out and set new rules in their house hold. why would they write or send a letter not to meation how would they know she was there in the first place? Did I miss something about the whole letter thing?

Zuko could go any where at this point. he could try to fight along side them or he could live a life with her uncle.?? Who to say that he just wouldn't try to find his own destiny. I still haven't a clue about him at this point in the game.

Sokka leaving is a good thing. Had he been the right age when his tribe left for war then would have been trained like a warrior. I think it personaly means that he will not only be?? with his father, but he will also learn to fight( being a trained warrior) and plan?? the attack on the firenation with his dad by his side. Sokka will be able to help and be of better use to the gaang. Sokka has already proved that he can come up with a plan before.?? It will work out for him. I for some reason do find it odd that he didn't stop for two seconds to say goodbye(hello) to Suki when it was clear ??that he had some type of feelings for her.

I am not sure what it holds for katara but I know that?? the writers wanted her to stay because?? she seems like the one that is most likely to bond with zuko. She has already?? tried to help Zuko by trying to heal his uncle's wounds.?? Who is to say that when they exchange stories that Katara doesn't help Zuko find his mother?? or lead him to the right path to finding her. Katara knows what it is like to not have a mom in her life and lose her young. Even if they have not gotten along in the path I think she would help him just like she tried to help the small town that happend to be firenation from over flowing with water(a dame so to speak)