Vaughn was the guy who was suppose to make Millar's vision of Superman so i kinda doubt that'll happen. I dont think WB/DC want to start of a superman franchise knowing hes gonna die in the 3rd movie and then they have to reboot it all over again. But it is cool to see a lot of directors talking about Superman and what they could do with it, it could mean that a lot of directors are starting to realize that WB has to make a decision to get a movie going soon, so they wouldnt necessarily be wasting their time making pitches that would just sit on a desk for 2-4yrs before anything actually happens with it.
as for Rami and Superman that would be a nightmare. That would prolly turn out terrible, we would end up with a emo Superman dancing down the street of metropolis pointing at women to some 70s song. Bay would try to make it too funny. Spielberg or Cameron would be cool, but i doubt they would wanna do it. Spielberg has been doing a lot of producing lately, not sure if he wants to go back to directing. Cameron has said the only superhero he wanted to do was Spiderman
i want a real serious direction on Superman. I dont want someone going out there with the intention of making a romantic comedy with action included. I want a scary ass villain, and epic action pieces. Ya there should be some humor included but it should be natural thru interactions between characters instead of having Clark Kent fake stumbling around the office and bumping into walls. Make it modern. i think guys like Mcteigue, Wachowskis would be willing to do that.