Support. Very easy to do, in fact I'm going to code this and put it on Spigot cause why not. //EDIT also storing inventory's before the player's inventory contents gets reset, will be stored and given when the player joins the server IF playing while a restart is taking place or IF the player leaves, otherwise on completion it will just give players their items anyway (which is what should preferably happen!)
Support It's a nice idea and then I won't have to complain about reaching to like wave 36 and just getting a sapling for my troubles Defeating bosses should give you bonus points too in my opinion