I see a lot of theories on this forum for what may happen in Avatar II (Which will almost certainly be called something else), but I haven't seen this particular theory yet. This is something I thought out a while back, and the idea was conceived for a fanfiction that eventually ran itself into the ground.
Pandora is a thoroughly unexplored world. For our knowledge, the only recon humanity ever got beyond the rainforest took form in the identity of orbital scans. They seemed to know that Na'vi clans existed beyond the forest and that the continents were multi-terrain. Other than that, we are given nothing.
What if the other continent of Pandora, for there are 2 major landmasses (Avatar took place on Australis), was less hospitable than the forest of Australis? What if, should there be a relative lack of foliage, an entity like Eywa was unable to form? If forests or any kind of plant-occupied area were few and far between on this other continent, no Eywa- like network could exist. It would be like eliminating 5/6 of the internet; would it be as all-encompassing as it is now?
With this in mind, the Na'vi of this continent would not have such a reverence for nature. In fact, they'd be similar to human society in culture, I'm thinking along a feudal system of government. They would fight more, and they would advance technologically more. So what would happen if they discovered the Omaticaya's continent, and decided to invade? The scenario would mirror Europe's slow takeover of the Americas, somewhat.
Not only does this allow for a sort of "what would the Na'vi be without Eywa?" scenario, but it fulfills the promise of Avatar II exploring Pandora's oceans. After all, would an invading navy not lead to some kind of naval combat?
So, with that theory in mind, thoughts? Plausibility? Please explain.