Also, if at all possible, wouldn't it be great to reinstate the subplot where the Emperor decides to actually blow up Endor if anything goes wrong? In fact, the moment things start going wrong, wouldn't it be great to have a countdown (like in the original SW!) to add some tension? Problem is the unmasking scene; could that be done on Coruscant? We're running into logistics problems, but you understand me.
That would be very cool. That's still in the novel. Was it shot?
I also like the idea of Endor being kind of an "Imperial park". If it could be set up, it'd be great; after they think they've "tamed" the little beast, they revolt and join the Rebels.
Is there any way to subtitle the ewoks? You could convey it when Chief Chirpa gets up and gives his short speech and makes his gesture. Maybe have something like "small in number we are, but heart we have. Fight with you, we will.".Oh wait, that's Yoda.

EDIT
You know what got me going on this? I saw that picture on one of the previous pages of Vader's SSD with the DS2 from ROTJ and a light went off. If you guys can do that,taking two elements and combining them together, then you can take one element and add it to an existing shot.