I'm sure he will just find another trope to follow to the T. Whilst i do enjoy James Cameron and one of his movies literally holds my vote as "favourite movie" it seems in the last decade out side of his documentaries he has fallen into the trap of rehashing.
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Not, it didn't share a genre. Avatar was science Fiction, the other 2 were - Dances with Wolves: a Western and Pocahontas: a Romantic Drama. they shared a Trope.
trope
trəʊp/Submit
noun
-a figurative or metaphorical use of a word or expression.
-a significant or recurrent theme; a motif.