Christophe Gans had my vote for director of Castlevania the moment the final credits rolled on "Silent Hill." The man already has Konami's blessing, he's a competent craftsmen, and he has proven that he can handle both video game and anime adaptations surprisingly well.
Can I just say also that no matter who gets the job, they will not do any worse than Stephen Sommers did. Remember him? Directed his own Castlevania adaptation a while back starring Hugh Jackman? It was called "Van Helsing?" Anyway, I like the Stephen's films and got nothing against him personally, but his take on the epic struggle between Drac and his mortal monster-hunting arch nemesis was just a tad too trendy and not nearly as sharp as it should have been.