^ If Cameron puts any thought into the possible sequel, the Na'Vi will have to confront the flipside to the knowledge they gained from the humans: The inherent human flaws from the humans, as well. If so, I'd have hope for a more nuanced and meaningful overall story.
I doubt it.. Cameron is a good director for summer blockbusters and knows how to put a movie together bit i'd not rate him as a subtle or "deep" director.
However that's tied into the style of his movies which are usually action movies which tend to focus less on characters but on huge visuals and much explosives.