I saw an interview with the guy who did the score. He said that he tried putting the Bond theme in more, but whenever it was on you just got this safe, secure, everything's-going-to-be-alright, Bond-will-come-out-of-it-with-not-a-hair-out-of-place vibe, which was distinctly what they /weren't/ aiming for. There was too much baggage with it for the way you were supposed to feel.