Im a massive survival, fps gamer fan. One thing I've never seen a studio implement, is rare locked room spawns full of zombies, with a warning sign "dead behind the door" some like like the walking dead displays on a regular basis. Maybe a medical facility has a chance to spawn a locked room at 10%, doors are boarded up, zombies are heard behind it thrashing about. The player knows there will be a reward behind the door, but the player will have to either outsmart the dead, or kill 15 zombies that the staff locked in during the outbreak. This can be applied to random facilities, police stations, military cells, prisons, ext. I wouldn't mind seeing the same idea implement on crashed cars. Maybe a driver crashed, died but has been sitting dawnment in the seat until a player tried to open it for loot. This kind of idea will bring the world alive and showcase stories before and during the outbreak. A resemblance of how chaos the world was before and the panic that set in.
#Rare locked room spawns with zombies.
dusk glen
heady hill
To be fair this is a pretty common thing in games. Whether it be in Zomboid or DayZ, locked rooms with rewards that are often heavily guarded or take some sort of puzzle to unlock are not uncommon.