As far as the plot goes, I don’t think they ever really tweaked anything. To be honest, what we have here is almost 100%, point-for-point, Pocahontas in space. The humans (Europeans) come to an alien world (America) looking for some extremely valuable mineral (gold). One of the humans gets tangled up with the locals (Native Americans), starts hanging around the chief’s daughter (Pocahontas), who is more or less betrothed to the village’s top warriors (Kokoum, not gonna look up the spelling, and I’m surprised I even remember his name). This human decides he likes the girl/locals more than his own people, switches sides, and fights them off in the big climactic battle. It’s all there. Honestly, though, it didn’t bother me at all, especially because they completely downplayed the whole betrothed thing. I think there were about 2-3 lines of dialogue that actually dealt with it. Since it really wasn’t an especially important part of an already lengthy movie (the tension between our human and the natives is already plenty high from other areas), I was happy to see that it wasn’t given much screen time.

I want to say, what you said about the 3D was true, but I question how valuable the technology as it exists today really is. What was added to the movie was decent, but given the strain that the glasses put on my eyes (they were watering about an hour and a half in and I had to take them off for a second) I question how much it was really worth using. I almost feel like the gimmickiness of the popping out is what the whole thing is meant to do, so until we get a better way to make things 3D, I just assume see it without.

Everything else you said I completely agree with.