Re: Avatar 2, 3, and 4
I also don't really see Cameron doing a Gaia-related story. Without the whole bio-net shebang, invoking a planetary spirit would entirely depart from sci-fi into space fantasy. I know Jake says something to the effect of "we humans killed our world spirit", but I'm not sure that was meant to be taken literally.
I will bet you a shiny new flying car that he does, because we'll totally have those by the distant future of 2018 according to scifi.
'First Contact' is the tale of a man who just wants to cash in on his creation so he can get wasted on an island full of naked women, but his fans keep insisting that he's a saintly visionary who has profoundly altered the world. AKA - 'I Don't Want to be a Statue: The Gene Roddenberry Story.'