The directors I truly want taking the batman franchise just probably aren't interested. But there are a couple of people I wouldn't mind taking it over if I had to settle.
Paul Greengrass who directed the first 3 Bourne films and Martin Campbell (Casino Royale/Goldeneye). They have both been proven to be good directors so long as they have a good script to work with.
What Batman needs is a good writer more than a good director.
I know how unreliable IMDB can be, but this is the first time I see it under 'announced' and if this is true, I wouldn't mind seeing another Batman movie. Aronofsky is a God.
They would have to wait a while to start making new ones but I would like to see may'be Guillermo Del Toro's take on it. After watching Blade II, The Devil's Backbone, and Pan's Labyrinth he is probably the best director when it comes to dark fantasy. I think he could have an even darker spin on Batman and make it still fantastic, without getting to ridiculous like Burton's Batman did.