While I'm fully expecting Disney/Pixar's John Carter to be family fare, the story has often been sold using similar themes as, say, Conan The Barbarian. One man can sort everything out, and needs a sword far more than he needs clothes. The new movie will be the first time in decades that the story hasn't been sold with flesh as well as fantasy.
|1917 - John Carter already sporting a daring mini-skirt|
|Another Frazetta, carefully depicted Barsooms|
|1990 Marvel Comics adaption|
|1996, Dark Horse sends Tarzan to Mars|
2012, Dynamite puts back the 'graphic' into graphic novels
Indeed, the current Dynamite Entertainment adaptions are now subject to a lawsuit for both the use of the character and it's pornographic representation. Presumably they missed Frank Frazetta's earlier works...
Large collection of cover artwork from a hundred years of reprints of John Carter novels on this FlickR account.
Much more about the many incarnations of John Carter here at the Barsoomia Wikia...