If Avatar had a better plot it could have made it to 3 billion!I didnt see that myself. Sure, the theme wasn't original but it's star wars!
Cameron has a good track record with great plots so I'm hopeful Avatar 2-4 will rectify the mistakes of the first.
But with TFA I don't mean it had an unoriginal plot within film, but it literally copied the plot from a previous entry in the series. I'm so glad Abrams isn't directing the next movies.