Ref,
There is a lot to be said for the experience gained in the GA world, the "hands on" stick and rudder is only a very small part of that.
Have you flown with these cadet/copilot types ?, whilst most of them are great to work with, their inexperience stands out, their situational awareness is very low compared to a grubby charter pilot with similar TT, ability to adapt is probably one of the greatest concerns i have seen.
If there is an open cheque book on training these cadets, no problems, but as there are both time and fiscal limitations to what training that can be done, very very few are going to meet a command level of competence in this time.
There is not substitute for experience, period.