Whatever they do, DC need to make more inspired choices for directors and writers of these properties (outside of Batman and Superman.) And these movies so far seem to suffer from "too many cooks spoil the broth" syndrome. With Jonah Hex, they hired Neveldine/Taylor, but then replaced them with a very commercial director (Jimmy Hayward- Horton Hears A Who). Green Lantern had Martin Campbell, who doesn't really have an affinity for the material. Then they made so many alterations to the original script, with four writers, and Johns coming in and making his changes. It doesn't feel very personal, or focused, so far.
I think Marvel has made smarter decisions with its choices. I mean, at least Favreau had some enthusiasm for the material in Iron Man, and it shows. Branagh was an interesting choice for Thor. And they hire writers who have had experience with sci-fi and fantasy features and TV. And other Marvel properties, like Vaughn with X-Men, and Webb for Spider-Man, these are more inspired choices.
The worry is that DCE is so commercial now, with all its tie-ins, that all WB is thinking now is making everything as commercial as possible. It showed in Green Lantern (ie. Hot Wheels).