I’m sure I’m not alone in loving the idea of cages being functional someday… if our wheel is full, we can park a subdued thrall in the cage while we wait for an opening on our wheel. I know this has been talked about before, but it’s been quite awhile since I’ve seen the topic, so poking it again
We could drop them in the cage the same as when we place them in the wheel. I’m even willing to have to re-subdue them once they are out of the cage, before being able to place them in the wheel. Different sized cages have different capacities. They have a durability based on what they are made of (bone, wood, hardened steel), and durability takes ongoing damage once the thrall is conscious.