Disney has an experimental theater on a small scale that, is if I recall, 6D. Its combined everything 3D but with air, smell, seat/ground movement, and 360 degree view. Its a combo of everything they have done for decades but applied to film. The test "theater" I seen held only about 20 people being located inside a warehouse. The issue will always be profits. There simply is no profit as the cost to make such a film would dictate the theater experience cost per viewer in the hundreds of dollars. The failure of various 3D movies over the recent years has a lot to do with quick editing cuts and just terrible movies. The cheese 80's 3D horror films were made as cheese and knew what they were. Most 3D of this era is a cash grab conversion in post.
I am wondering however if the Avatar sequels will have enough behind it to push theater headphones into existence. Imagine a movie you can hear over the ******* that has to take this call, the girl asking what just happened or who is that... A 3D headset with 3D sound. Not VR which is cost preventative, but the next practical phase of 3D. Anything beyond that would be a tough sell on the dying theater market.
