Damn. I've been avoiding this thread until I saw the movie. Wow, if there is someone that saw the movie, but didn't get it, it would be the OP.
Have you never seen a Cameron film? It contains all of the stereotypical elements even the money-hungry corporation.
I thought it was interesting that the story jumped right into the plot without the lengthy character introductions that I thought were going to be part of the movie. But then, as I stated above, JC must also know that all of the main characters are stereotypes straight from his and other similar movies. They're all there; the gruff, gung-ho, ex-military guy, the hard-nosed, bossy, perfectionist, the fish-out-of-water protagonist, the chieftain, the chieftain's daughter that our protagonist falls for, the chieftain's daughter's future husband who hates the protagonist, but concedes to him...
The score seemed dull and stereotypical, too. Look, mysterious natives! "Well, with have to have gobs of percussion to symbolize the primitive people and we'll just go ahead and reuse a solo flute to parrot their strange and mysterious ways." I was expecting more from Horner, but JC's really never been much about the music in his films. I can't think of a single melody from The Abyss and that's my favorite JC movie. Terminator and T2 had similar main themes and I can hum those, but they were also written by someone other than Horner. I was just expecting something cool and original as well as other-worldly.