I think a day and night cycle in the game would be really cool if at all possible. It would make the game more interesting and different than the other DarkRP servers, and could open some new job opportunities. I am aware that there are cons of this idea, but I feel like there are more pros to it. For example, thieves could raid bases easier during the nighttime, as more people wouldn't be able to see them. Hell, you could even make it so that Sewer Dwellers can only come out during night.