• Marion Cotillard
• Angelina Jolie (I can't really believe they haven't cast her before)
• Carey Mulligan (if they wanted something a little different)
• Frieda Pinto
• Eva Mendez (even though I don't like her that much, she would fit well into the 'classic' Bond girl role)
• Natalie Portman (odd, but maybe good at portraying a character with significant depth)

Basically I think Marion Cotillard would be awesome