Here is a fun exercise for a lazy day which I hope will generate some discussion. If DC had an Illuminati, who would be in it? Marvel's bunch was brought together to stop the impossible and was mostly made up of kings and scientists.
DC brings a different flavor, because I'm taking out the two guys they lean upon so heavily. Superman would never stand for shady shenanigans and Batman would (a) need to be in control of the group and (b) if the possibility of killing came up, he'd be out. I also hesitate to put Luthor in the group because we've seen him in secre organizations before ( Injustice Gang, Secret Six) and we know how that turns out. Luther's need to dominate is greater than Batman's. On the other hand, he fits the criteria of being too smart with a heavy dose of arrogance and hubris.
Anyway:
Aquaman- king of the seas and known to make tough decisions
Black Adam- king and dispenser of old school justice
Constantine- magic and known to be a bastard if the situation called for it.
Atom- Ray Palmer is a big brain
Dr. Light- Kimiyo Hoshi, also a big brain
Maybe Martian Manhunter? Pre-52 J'onn would not fit, but post-reboot, J'onn has more edge to him.
Wonder Woman? She is royalty and will deal out the pain, but is she too close to Superman and Batman?
Steel? I'd like a guy that could build things and make weapons, but I don't know his current status.
Green Lantern? Not Hal or Kyle, they couldn't do it. Maybe John or Guy.
Will Magnus? Smart guy and a little unstable.
Thoughts?