Some points drawing on the criticisms of the story:
Finally. I've been looking for this shot for days now, finally found it on youtube:
This shot right here tells us everything we need to know about Humanity in the year 2154. Their superlative ambition out scales and towers above and beyond their own feeble stature. And corporatism is the law of the land.
The frequent mentions of how Earth is a dead planet, makes some people curious to see Earth and long for more time to be dedicated towards the blue planet. This doesn't appear to be what Avatar is trying to convey. The light is shed on how humanity fairs after earth, and how humanity appears to be fulfilling Agent Smith's checklist of what a cancer is. Think of it as sort of how Tarantino never actually shows the entire heist in Reservoir Dogs.
If there's one thing I'd want to know about Earth. It's the status of humanity's social climate. How is the world fairing in terms of things as Poverty? Wars? Religion ( especially since an Alien species has been discovered)? 140 years is a long time. We've changed in a shorter span, how much might humanity have changed by that time?
Perhaps the fact that we're drawing these questions on earth, is a testament to how much detailed Pandora actually is. From the extrapolation of the Na'vi's cultures traditions, ethics, to the lush flora and fauna. Coupled with our natural inclination to want know the same information in detail on Earth.
Jake's Character;
Criticism of how "empty" and a "vacuum" of a character he is, aren't well founded in the greater context of things. Jake is a paraplegic, he seems to not have anything going for himself in life. He doesn't see a future for himself. And this man, gets a chance to leave earth behind, and be part of something many only dream of.
He is a character longing for change, the moment he gets in the Lab, he rushes to see the Avatars. Displaying his eagerness to leave everything behind. As he wakes up in his new body, he's so mesmerized that he just starts running and running.
Jake is how the audience feels at the moment they're watching Avatar. His character in fact,
adds to the experience. He speaks with the Colonel, the colonel seems reasonable and that's how the audience sees it at that same moment. So a deal is made. Later on, Jake+ the audience realize how there's more to the Na'vi then what we've previously conceived. So Jake changes his perspectives, representing the audience again. And so on and on. The fact that Jake's motives are simple, hinders the audience of wandering around in their minds trying to figure out what the hell is going on. You need a character like Jake in order to make a film like Avatar. There will be definitely more to him in the sequel(s) to come. And an extended cut will most certainly add more to current Jake for those who seek those depths of character
In contrast to some people. Many of my favourite moments consist of the first 10 minutes. The humbling introduction to Pandora and human advancement left me wow'd multiple times.
But that's just my opinion on the matter.