I'd totally watch a Duncan Jones Superman. (I'd watch a Duncan Jones Paint Dries.) But I'd hate to see him follow Chris Nolan--that is, wasting his time and talent making blockbuster superhero films when he's not all that good at it.
On the other hand, Duncan Jones adapting "For the Man Who Has Everything" seems like it would play directly into his strengths. I'd say it might even make Alan Moore eat some well-deserved crow, but if Watchmen didn't, a Jones Superman wouldn't either. Still, I doubt that would be the direction a studio would ever go in, even though I'd love to see a cosmic, Krypton-centric Superman film instead of the same crap on Earth for once.
Zack Snyder would be also great choice, if they plan on shooting an adaptation of a specific comic. He's really good at that--and I don't mean that in a pejorative way.
I don't know who those other people are.
P.S.: I still say Superman Returns is a good movie. But if, in the rebooting, they finally catch up with John Byrne and 1986, it might be worth it. If so, bring back Spacey!