I'd rather see it as a Legend setting.
I just reread the books not too long ago. I'm sorry I did, it has ruined the <cough cough> movie.
I am always amazed at how Follywood can read a paragraph that says "yellow flower in green field" and show a grey desert with purple weeds. Not that Barsoom had yellow flowers in green fields. But my favorite parts of the series had to do with the airships. And the movies version completely ignore the books. Oh well,
But a Barsoom version of Legend would be great!