First off I agree, but have to say I actually disagree with the repeat story line.
No worries. I was a smart *** back in my college days. Today I only spout off in a theater during Rocky Horror movies.
They mentioned in the movie that earth was a dying hell hole. And the Unobtanium was to salvage them somehow. I don't recall why it was to work.
I did give it the option of seeing it before comment. I agree the effects are good and not quite as in your face (with large areas of no plotline) as Star Wars, so They did a good thing with that. I just didn't care much for the story and my history watching movies is part of why it didn't click.
And they can do a script that isn't quite so derivative. IMO. Of course they are remaking many movies now. I did like 310 to Yuma and the Star Trek reboot.