[QUOTEYou don't have to extrapolate too far to realize that having worked towards the lowest accident rates(historically)we may see some reversal of the trends when Airline Capt's find themselves becoming single pilot operations when the workload increases simply because the new F/O is overloaded][/QUOTE]
An interesting point of view. However, I think the extra workload on the captain is offest to a large degree by the current and future airline policy to avoid hand flying at all costs and instead make sure there is almost total reliance on automatics from 500 ft after take off to very short final.
With pin-point navigational accuracy, superb autothrottles and brilliant MAP displays coupled with ATC radar, then the chances of the captain being caused a problem by a new inexperienced first officer is minimal. BUT - fail one of those links in the safety chain then that is where you wish you had an experienced ex GA pilot in the RH seat.