Have you seen the new theorie about Spider becoming the next antagonist? Spider could discover that Neytiri killed his mother, or Quaritch could win him over. It would be shocking, but it would make the story interesting.
there is no world in which Spider would ever become an antagonist. it's never been a facet of his character to be angry or malicious towards the Na'vi, even when they've earned his ire interesting story, maybe. but it's such a disservice to his actual character. Spider didn't save Quartich out of anger or to hurt anyone. he knows his parents were killed and deserved to be killed. he would give his life for the Sully's and for the people, tried to even.
sorry if I sounds rough, this anger isn't directed at you, but I hate this "theory" so much, I sprout teeth and claws. because it shows a complete lack of understanding of Spider's character, morals, beliefs, goals, ambitions, and drive. his entire existence is committed to Pandora and Eywa and those he loves, his siblings namely. he puts up with all he's endured because of this love. his holds mercy on his father, because he believes in mercy, he believes in kindness. he wants to be one of the people, he wants to be one with Eywa, even if they don't accept him. because he knows he belongs. he could never turn his back on his people. he could never be like his father. could never harm an innocent or take without thought.he had kept going because of these beliefs. kept fighting.
Neytiri has hurt him, but he will never hurt her back. he can be angry. but he will never be an antagonist. he will never hurt his siblings like that. he will never hurt his people like that. not unless he gets brain injury so bad he has full blown amnesia. and I don't even think Q would do that to his son, turn him into an angry villain of a boy. because Spider is the only thing that makes Q soft. he accepts how Spider is, truly how he is. sure he might not make him re-remember Jake and Neytiri in the best light, but he wouldn't make a weapon. he'd probably just run off with the kid. he has too much respect for him and for his loyalty. making him someone angry takes away what he sees in that boy (and this is not hyping Q up. he's still awful. but he's it cartoonishly evil, and the only good thing about him is his attempts at raising/loving Spider. and it's not great, cause he's still himself, but he is more then evidently trying).
Spider would have rathered dying over giving the RDA information. nothing with change that about him. that is his core. goodness without a need for reciprocation (he deserves it, but he doesn't expect it)
and with what we know from leaks (not the trailer. dw), between the tattoo and gaining the ability to breathe, he will be getting the acceptance he's always deserved, and I can think of nothing that would drive him to abandon it.
a Spider who betrays his people is no longer Spider, and I can see no world where James goes that direction.
people just want to hate him. being completely frank. they want to hate him or they want him to be the bad guy. they don't understand him. they don't want to understand him. the only way they can "understand him", is for him to be inherently evil after 16 years of showing not a single drop of bad blood in his bones. that or they hate the Na'vi and want him to be just like his daddy and continue his harm against the Na'vi.
so I hate those theories. they're baseless. bad story telling. and have negative intentions towards one or more of the characters in the franchise, with no understanding of what makes any of them tick.