I know Pudge will be glad to hear this having 4 more Avatar sequels starting in 2018.

Cameron says people who have seen the concept for the future Avatars have been blown away. Of course what are they going to say it sucked.

Well the Mission Impossible movie series is still making money as well the Lord of the Rings movies. Star Trek also so it can be done having 4 sequels.
http://www.msn.com/en-us/movies/news/ja ... orm=prhptp