I agree with your assessment regarding Bond's character development from Casino Royale 2 Quantum of Solace. If I were going 2 take a guess as 2 what the next film would pertain 2, I'd wager that after this return 2 the Bond persona we're all familar with, the films might go back 2 a lighter tone. The producer will likely respond 2 the complains of how this Bond seems 2 cold, 2 humorless, 2 similar to the Bourne series, and will probably respond 2 peoples concerns that the action in QoS was edited 2 fast and 2 furious for most people's liking. Expectations were probably just 2 high though in the end. But I got what I wanted for the most part, essentially a Casino Royale 2.
I didn't like the villain either, I thought he was sort of lame
) and has every right to be in a Bond film. The plot was sensible, and should be taken at its big picture value, not the face value. People who left my screening complaining about the movie were talking about not understanding how owning water in Bolivia had any global impact. 
They completely missed the fact that it's an example of what Greene is doing and could do around the world to gain money and power. The real villain in the film isn't even Greene---it's the mysterious arch-nemesis group Quantum, the emergence of which we get to see in teasing tidbits. Anticipating the details of Quantum was kind of like watching a season of Lost (the good parts, anyway)---you know there's some greater power/mystery at work, and you're getting the clues in tantalizing morsels one at a time. 
