Don't Kill Players Who Log Off
When a player disconnects and reconnects to a multiplayer server, they are forced to respawn and drop their items. This mechanic is, as far as I know, rare among survival games. In Minecraft, players disappear and reappear (inventories intact) when they reconnect. In Rust, a more "hardcore" survival game, players who disconnect fall to the ground (and appear to be asleep). They may be looted or killed, but they retain their inventories.
Both of these options seem preferable to the status quo. In a game that contains, as we all know, numerous game-crashing bugs, I find it incredibly frustrating to lose my entire inventory, as well as my location, every time I disconnect.