Still can't wait until Zuko comes into the picture. 81 years old, so he won't be doing much, but it would be nice to see him around at least to train.
Really hope they do more with Iroh, Zuko's family possibly, and Bumi and various other characters. I'm also curious as to the new family of Tenzins, that baby may be special in some way, at least that's what it seems due to the way they... er... introduced him.
First chapt ended on a "Anything can happen" note, with no hints as to the future, so who knows.