maybe off topic, but as it pertains to NRJ, I am not sure where you would want to insert more animatronics. Part of the thing i think that really works for the ride, is the immersive nature of it. Like Avatar itself, the ride really showcases the land/journey across Navi River. Its one of the reason the screens really work, the "characters" that are making their way across the river with you are all in the background, and compliment, don't overpower the environment that you're in. I am not sure where you would place more animatronics to keep with that. Anything as large as the centerpiece is going to dominate that area/room i think to the detriment of the ride experience. Any anything really smaller is going to have scale issues for the ride.