Instead of everything being pitch black at night. I’ve come up with an idea that I’d love to see implemented through a mod or even in the main game. Though I’ve no idea how to mod.
Night time lighting- Now instead of total darkness everyone knows that after a few minutes your eyes adjust and you can see thinks. Albeit not clearly, but you can make out what it is. So instead of making everything pitch black apart from a few squares around you. Darken all of the symbols at night until they are almost black, but you can still just about make them out.
Night time scavenging - Only items near you are identified. So if you use the “x” command to look around then the game would say “there is something there” , but if you go near the the item 1-2 squares away and use the examine or the “x” feature you would be able to see what it was.
What about the night vision trait? - Well this might make the night vision trait seem useless at first, but. What if the starting trait made it so you could identify items from further away and made all the colours slightly clearer. Then if the mutation level 2 version increased the identify distance even further and brightened the colours even more. Then the level 3 mutation made it so night time had no effect on you.
Zombies at night? - Zombies should be able to see much less in the dark and navigate via noise. Pathing towards it. Zombies should also get a slightly more aggressive at night making them slightly stronger.
Player at night - The player’s view should still be lessened, but only to half of whatever you have it set at in the options. Also they should have a higher miss chance with guns and melee weapons (also lowered by night vision traits)
I think that the game could be made much more realistic by a system like this as well as a little bit more fun. To me at least.