Have our thralls be able to switch to ritual tools to harvest bodies with an attack command, or a new setting in the behavior menu for thralls if you give them ritual tools. Have a notification on the side of your screen if they run out of space in the inventory. Or actually, something I just thought about, a completely different thrall. A Harvester Thrall. You can still give them weapons but they can switch to daggers or whatever to harvest bodies.
The only auto harvesting thrall are golems. …but that’s a good idea. You create a harvesting arm with the favor tool of the religion and that thralls captures the essences for that faith.
So you want to just afk in the game?
When you’re gathering mass resources and the process would be made much faster.