One pilot on flight deck duty, no pilot at all. Fine. But with the maneuvering, navigating and communicating accomplished, what's left? Decision making for one thing. On site accountability. The perception of control. Consider all the verification, confirmation & reassignment of tasking as even minor change forever finds its way into the most impervious flight plan. On a really chitty night, with a terrified cabin or Dr. Dao's evil twin shrieking his lungs out. How does that happen remotely, in a universe of hair triggered, liability pitfalls, when big smoking hulls are broadcast in real time? No bucks, no Buck Rogers. My God, who would eat all those crew meals?