I think it's time to add harder level for scavenger runs. Whether it's XP supplies or gear, right now the only option is normal and hard. Both of which can be done with the greatest of ease if you have 3 level 20 characters and half way decent gear. And there's no longer way to lose your characters the memorial just sits there and Camp doing nothing. So the worst that could happen really is you got 3 people in the hospital for an extended amount of time. Perhaps just one Survivor can go and it doubles up the reward and offers better gear.