How many hull losses of perfectly flying aircraft did we have now due to inability to observe / control the thrust / airspeed?
We need a clear policy worldwide: manual flight equals manual thrust, no exceptions in normal operation allowed. Autothrust only with autopilot on or under technical abnormals if judged helpful by the crew. That would give pilots their scanning and their muscle memory back. It would not cost a penny, but save us the next hull loss due to no thrust in the wrong moment.
Then Boeing should think about redesigning their thrustlevers, remove these TOGA-buttons and include mode-selection in the thrust lever itself like Airbus does it.
It really would not be that difficult.