ILM Has to do a task. GL or whatever other, set some dos and don'ts. They had deadlines and they had to follow orders. Plus they hadn't/ haven't to do only a special edition. If they said to leave the skies or the effects as it have then they did it.
I dont like the way that all blame ILM, but maybe we should the man who gave the directions.
Ady from the other side, willfull decided to start this project. I think he didnt rushed and he dont have a supervisor over his head to manage his moves and creativity.
-Angel