Hey candyapplesweet here me and few friends have hunkered down on nw american server. and have come up with ideas for the game. I am sure some have been mentioned but going to repeat to show what is liked the most. Most of my ideas are trying to stick to survival.
code for door=great idea but i think should make wire out of metal and find batteries to craft the box to punch the code.
wire=crafted from metal and also make bared wire to place area base and if player gets to close it does lil damage.
veggies= I think we need few more plants to farm like carrots and/or corn. plus dont sell them in npcs. point is to scavenge and survive. So sell candy, beer, wine, water so on in npc and make them less effective than farmed food
pot= craft a cooking pot out of metal and wood
stew= use potatoes, carrots/corn, meat and drag raw version and drop onto pot and make stew that helps regen health faster. but only works if not in pain or infected.
allies= a way to friend allies so you do not attack them.
map= craft a map from cloth and use symbols like car/cars, house/ for your base, face or money symbol/ for npc shops.
have it where if you loose it you have to start all over marking stuff on it.
matov cocktail= use wine bottle and cloth to make type of bomb
quest= have npcs in game they ask for item like 5 bottles of wine, a certain hat, medicine, so on and get rewards/exp for doing it. also can have quest where you help defend npc camp from herd of zombies.
chest= craft from all 4 materials make it locked unless you place code box on it so friends can get in it. And of course its breakable but make it have same durability as 2x metal doors