Ridiculous. Never will happen.

From a human factors stand point, you'll never get this to work.

From a cost stand point you'll never get this to work. Eliminating a $150 an hr position, you'd need to increase the CA pay, mx costs go up, other new positions would be created to monitor and maintain this technology, you'd have to factor the cost of lost revenue from passengers not flying.

Also, rest rules would have to change. Who is going to fly 8 hours block//14 hours duty all by their self, with literally no interaction from anyone? Forget reading the paper in cruise, you're the only thing separating an ATC mistake from a big fiery crash.