What everyone needs to remember is this. The Pandoras Box that appears in those promo videos for Vekoma doesn't exist anymore. They have an updated version that is quite different.
And there are no guarantee's it would even be used for Avatar. It could be used for a wide variety of things as the ride system is very customizable..
eh. Disney won't even give their own headliners that great of customizable expeirences or put that sort of expenses on their biggest properties. Toy Story Mania and Star Tours for example. I don't see them ever spending that much money on Avatar I think it was just more dreaming Disney would build a working attraction on that sort of scale again.