A great post that will, hopefully, generate a lot of discussion.
Just a minor point on statistics though, yes, Captains are flying for 6 out of every 10 accidents but that is partially because an emergency has occured and the Captain has assumed control from the F/O, albeit in an unrecoverable situation. The CVR and FDR will now show the Captain to have been the PF.
Captains will need to maintain their skills not just to fly a normal line trip but also to cope with emergencies, so flying the 'monitored' approach all the time may have a negative effect on a Captains handling skills, if not his thought process.
Well, that's two minor points, but this subeject is huge so it will be interesting to read all the varying view points.