penalty system for killing innocents; reward system for killing bandits (higher his kill count, the bigger the reward). different types of servers: regular = no perma death (respawn) ; crosshairs, etc. - weaker item spawns hardcore = perma death, no crosshairs, etc - stronger item spawns character saved on server, keeps HC people from mowing down the newbies in regular, and prevents server hopping/farming/ghosting. you know he's stuck in the tower, plant a claymore in it for later. make sniping incredibly complicated, as it should be: bullet drop, wind, etc. scope glint maybe, like battlefield3. dont get me wrong, i love sniping. but i despise the average noob being able to. accessories: suppressors by calibre and grade. example: high grade sniper suppressor.... doesnt overheat too fast, vs cheapy suppressor. types of optics (nightvision, thermal, etc), with respective rock/pape/scissors handicaps to keep it balanced (range and quality limitations) ; booby traps, claymores, landmines, IED's; more populated cities... why would supermarket and store inventories be completely empty? getting past the 100's of Z's is the challenge in the first place. very few people would manage, to stores should be pretty much stocked, in shambles though. like raiding a police office, hospital, armories, etc. the prize should be there. different types/classes of zombies. like JR Bourne's books.... the average zombie is shambling and can even jog a bit... pick up momentum en masse, but irradiated/nuked zombies have slight intelligence... a leader of sorts. can actually engage you, run and flank. both... ONLY HEADSHOTS KILL! keep to the proper mythos of zombies. hit legs will make it crawl; chest will knock it over; head will kill. bite = infection, lose blood even faster. abundance of vehicles. why would 99% of vehicles be broken?! out of fuel, yes. dead battery, yes. why broken/scarce? just find the nearest car park (full of zombies), have your team secure the entrances, and your mechanic repair/refuel one of the dozens of vehicles there. anybody must be able to find a cessna or helo, they should be easy to FIND .... at airports or military camps, duhh. GETTING them must be difficult and require teamwork. equip/carry TWO primary weapons. one for each shoulder. for example: MP5SD and proper rifle. none of that backpack switching BS. making the game too technical regarding medical/toolbox stuff..... will make it exactly that. too technical and complicated, all these features will have to be coded additionally.... more dev time, more money. K.I.S.S. rather specialize.... medic OR technical, with individual tech trees / modules. carrying around a hatchet + toolbox + spade + + + + is silly, imho. have people specialize instead.