I hope they consider making it a CGI film; that way, Hideo Kojima himself could direct it, and David Hayter could voice Snake.
Hideo Kojima directed the games, and the overall presentation of the game series rivals that of Hollywood movies.
The Metal Gear saga is Hideo Kojima's masterpiece, and IMO, no one is better qualified to direct the movie adaptation than him.
As for David Hayter... Snake just wouldn't be the same without that signature voice.