Mark Ruffalo was being interviewed by MTV about current projects and future projects and had this to say about a Hulk solo movie:
“I don’t think that’s where they’re going to go… “Planet Hulk” is: they actually launch Bruce Banner into space to try and get rid of him and the Hulk. And he ends up freaking out, smashing up the spaceship, and it goes off course and it ends up on this planet of gladiator creatures, like pre-Christian, Romanesque.
“I don’t think that’s the way to go yet. I think you need more Banner. The whole thing is just him as Hulk, on a planet, fighting other gladiators. He falls in love, he has a baby, he finds a woman… and then The Avengers nuke the planet.”
While Mark did bring a new Bruce Banner to the Avengers movie, I am going to disagree with his statement. I already know and accept the fact that they will need to make some changes to make a Planet Hulk movie. There is no way they could make it like the comic, there have to be some alterations to the story. Well one of the changes could be that Bruce would have more screen time. In the comic, you really only saw him in the Hulk Annual for the storyline but there would be ways to give Bruce more screentime. I feel that the brought concepts and imagery of the Planet Hulk storyline would bring in a bigger crowd than just another Hulk movie with just more Bruce in it.