Dungeon "Crafting" Chest

So this more or less pertains to Wanderer's Palace, as I haven't done any of the other high level dungeons yet to see the itemization locations. So I dunno if other dungeons have a problem similar to this one.

Recently I've been encountering a troublesome paladin inside the DF. At first I thought him to be a griefer but now I suspect the player to be running a bot program. The player would run in the dungeon to open the chests, "need" roll on the scimitar. Then die, respawn at instance starting location and wait for the party to drop from frustration.

Could it be possible to add a chest with all the dungeons desirable crafting items that spawns in the final bosses room and only when the final boss is defeated to prevent this behavior?