I would love to see J. Michael Straczynski at the helm. I can think of almost no one more qualified for a project such as this.
Also, I'm a bit disturbed by all the Stardust love in this thread. That steaming pile of dreck makes the PT look like cinematic perfection in comparison. To quote Philip French, it "fails on every level and plumbs new depths of camp embarrassment." X-Men First Class was, admittedly, handled quite well (despite one or two continuity issues). But Stardust was so mind-numbingly awful, I'd feel pretty uneasy if Vaughn got the job.
Every 27th customer will get a ball-peen hammer, free!