So the twists have already begun, and M. Night hasn't even started filming
From the last appearance by the director, it felt as if he was telling everyone he has found his gaang, but apparently that is not the case. Most of those names from the beginning had said, "in negotiations" at one point or other. Perhaps those fell through, and those actors went on to other projects. Perhaps M. Night is really making sure to bring this film every gem he can find, so they are leaving no stoned un turned while looking for actors.
It's just another thing to keep the Avatar fans on their toes. We will surely be watching and waiting for any news
