Multiplayer item saves?

[nerrd alerrt]

Material/items in multiplayer need to be saved somehow.  If you are host and a player gets disconnected, all of their items are gone.  At the end of a session, its a pain to make sure they put everything in your chests so that progress does not get lost.  There have been multiple times where a person I am playing gets booted (understandable because it is in preview), but all the stuff they had is gone.  Progress flushed.  We then spend a few more hours getting good armor crafted to go on the adventure we were planning on before the materials were lost.  Can there be a lost and found?  something of that sort?