If Aang dies without producing any airbending children, wouldn't the avatar cycle end. Because when it comes to an Airbending Avatar again, there'll be no one to choose from.
Nah, no one ever said that the previous avatar has to give birth to the next one.
If and I state IF they want to tie up the loose ends they won't just make a whole new book (even though not anyway) they could easily do it with a movie or something. V
Agreed. Why take another twenty episodes for Zuko to find his mom. I really like the idea of a movie
And, again, like I said before (and you probably have too latios, lol) that the show is done. D-O-N-E DONE. Other than a few loose ends that they may or may not tie up everything else has been accomplished and finished.