I want every room in my house to have a hardwired:
Temperature Sensor
Humidity Sensor
Presence Sensor
Lux Sensor
Voice Input
Voice Output
Bluetooth Proxy
Others?
I think it would be best if it was PoE. I think in many rooms this could be one device that replaces or adds to a switch. In some rooms, it would need to be ceiling mounted. In some rooms it would need to be corner mounted. In some rooms multiple would need to be used.
The software (HA) should help with setup. At a minimum it should know where in the room it is mounted and how big the room is. It could also know adjoining rooms so it can see handoffs.
While I am willing to rip out wallboard to install such a thing. This would mostly be useful in New construction.
The closest I have seen is the Everything Presence One.
I will keep dreaming while others are delivering useful products.