The challenge with John Carter is that The Barsoom book series heavily influenced Sci-Fi works that came after.
Elements of the story are in Buck Rodger’s, Flash Gordon, Dune, Star Wars and as recent as Avatar.
As a result so much of what makes the character and his stories great, will seem like rehashing of stuff we have all seen many times before. Problem is it is the other way around.
Also Disney released a god awful version of the story in 2012 movie. God that movie was a mess.