My suggestion is instead of making a player's body despawn after a certain amount of time, they should instead turn into a persistent zombie that will walk with no set path and retain all of the character's loot, with the exception of what dropped from their hands. This would add further immersion and random occurrences in the DayZ game world. To make sure that this wouldn't be abused and cause unnecessary lag with dead fresh spawn player zombies, it could be implemented to allow only characters who have survived a required amount of time in order to turn into a player zombie, and could be made so that player zombies will slowly deteriorate until they despawn eventually.