I'm so glad they went that route. Planet Hulk was one of the view comic books I recall reading and loving as a kid. It involves the Hulk being seen as too dangerous and being blasted off Earth in a rocket ship... him crash landing on a strange planet and getting a mind control device put on him so he's forced to fight as a gladiator against all sorts of monsters. I highly doubt they'll go with the way it ends where he has a family but they all die... and he manages to get an alien ship to return to Earth to get his vengeance.