A few weeks ago, just for fun I started doing concepts for a faux Justice League CG movie. I've always been a huge fan of Bruce Timm and the DC Timmverse he helped create, and I thought it would be cool to basically design the JLA movie that I would direct if given the chance. I didn't do any huge drastic changes because I didn't want to betray the characters in terms of who they are and what they're about. I just wanted to build on what's already been established and tweak things the way I saw them. I was going to wait until I had more artwork before I posted this, but with all the freelance I've got, I don't think I'll be able to work on this again for a while.
THIS IMAGE: These were (relatively) quickly done pieces to give an idea of mood, lighting, and color. I'm not 100% happy with all of them, but for the most part I like how they turned out. More than the other stuff, I wish I had time to do more of these. I feel bad that Green Lantern (black guy) is the only character who doesn't have one, but I was going to do another set of 3 with Hawkgirl, Green Lantern, and Flash. Maybe I still will.
I think you should try your hand at some New Gods art since I think the only a proper film based on it would have to be CGI. You could make an awesome Darkseid or Orion I'm sure.