I always thought that the most interesting aspect of DayZ was the portrayal of emotional realism -- stress --- in a survival situation, especially in a zombie situation. The feature in which fear shakes your screen and distorts your aim should be heightened, expanded upon, and even exploited to add more gaming elements. I feel that being close to death would distort your perception so much, the effect should be more of an obstacle rather than just graphical experience. What would counter that obstacle? Cigarettes. Their hip, their cool, they make you look sexy and they also lower your stress level. Cigarettes would be the perfect counter to your fear level when around zombies. It could be a consumable item that lowers the effects of fear around zombies, such as shaking and heavy breathing. It would be super rad.