Sam Worthington. Hmm... no. Honestly, any of his acting works have been underwhelming to me. Not to say you need to be Oscar caliber to pull of Bond, but I just can't seem him being Suave and Sophisticated for the role.
Christian Bale, I can see, but I strongly doubt. He can do action, and sophisticated, as seen in the Dark Knight. However, if he can keep riding that cash cow, why switch? Plus, I think most people would see him in a Bond film, and be unable to divorce him from the Batman role.
Will Smith, ironically, I think is the person who I can see the most of the three. He can do sophicated, non "Bad-boy" movies, can pull of some dry wit (the only knock on the Craig bond), and he can do action. The only knocks is 1) No brit accent, but I think he could work on that, and 2) He's black, which would require an acknowledgement that 007 isn't one character, but a succession of characters with the same name and number.
Honestly, one actor I wouldn't mind seeing play the role would be Robert Downey Jr. He's no stranger to action movies, the british vibe, gadgets and dry humor (hell, just stick Sherlock Holmes in the 21st Century...) I can see him doing a very, very good Bond.
