Speed is the pornography of video games. Like adding skin to a film, adding speed to a game isn't usually about making the game a more thoughtful experience. It is about exciting its audience's instincts on the most visceral level possible.
Call of Duty: World at War's catalysts for combat personalize the brutality that the player will mete out on the Axis by dehumanizing and "othering" the Japanese and the Germans as barbarians and monsters.
The hybridization of Quantum of Solace's first person mechanics with gameplay styles more often found in third person action titles lends the Bond game a curiously more elegant and thoughtful approach to first-person shooting.