Possible Avatar: 3 (Fire & Ash) Theories

Based on recent interviews, Zoe saldaña has been alluding to the possibility of the sully family separating over the events that will happen in A3. One possible theory could be that Neytiri will be called back to become the Tsahìk of the Omaticaya, after the death of mo’at. It’s definitely a bit on the wild side, but I definitely think James Cameron is trying to set up the eventual return of the sully’s, specifically Lo’ak, as a leader for his people. So I definitely believe mo’at could be one of the possible “big deaths” for the upcoming movie. Another theory could be the death of Aonung (given Cameron’s notorious preference for the death of older siblings) this could, in turn, open up the role of clan leader to Tsireya/Lo’ak given the direction their relationship might take over the course of the franchise. What do you guys think? Please share your thoughts and theories!