*cough cough*
There is an
Avatar script by
rachelmanija(Rachel M. Brown) and
sartorias(Sherwood Smith) on offer at
livelongnmarry. Supposedly, it focuses on Zuko, Katara, a mysterious other, and is set after "Western Air Temple."
If anyone here cares about such things.
ETA: Forgot to say that it's a spec script, not a production script. (Silly mailman knocking on the door.) So it may be the only way you can ever see it.