You can see it coming - SOPs that stop thought processes and cover every eventuality become programmes (computer programmes) coupled with pilots who never fly a real aeroplane (only a sim) this can all soon be reduced to the foolproof CIC - computer in charge.
We are testing the logic (software) for the next generation as the hardware exists already. ETOPS reckons the chance of a catastrophe is ... so when the human-free flight deck approaches this level of risk and the cost of employing people to make mistakes has risen we will see hundreds of pax committing themselves to the air - on their own. Autoland is proven. Slots only exist because we can' t be relied on to get to a point in space at a particular second.
ATC - no more, the transponders talk to each other already. Separation - we only worry because we can see all these fast moving tubes getting nearer and nearer. As long as they all miss each other everything is fine - computers don't get tired and once we have proved the logic works - hey presto!
It will cut down on security costs as there will no longer be a flight deck to interfere with and only pax to check.
Cabin crew happen to be cheaper to hire and fire and will be able to report any inflight problems. In these selfservice days why have so many - a video (CD) and your own lifejacket will be all that is needed, and a coffee/tea machine by the toilet.
How long until this happens ?
PS - Accident - whose fault ? Computer glitch. Who pays ? A natural hazard.