Once you get it setup, start looking for homeassistant compatible hardware instead. There is a lot. Even some big brands use protocols (zigbee, zwave, matter) that can connect to homeassistant without a need for their hub (granted you do have a HA hub) or cloud connection.

I try to stay away from WiFi if possible, but if home assistant compatible I’ll use it.

Haven’t seen Dead Cells mentioned. Love that game.

Doesn’t losing a vdev cause the entire pool to be lost? I guess to your point with sufficient redundancy for new vdev 1 drive redundancy whether 3 disks or 5 is essentially the same risk. If a vdev is added without redundancy that would increase risk of losing the entire pool.

https://archive.org/details/swgrap