"quote" I know that most of the cadet programs are geared around multi crew flying from day one.
This where I think the industry has got it wrong!
I know from my own experience doing my big nav around Australia to build command time before the CPL test was a real charachter building experience. It is important to be able to prove your flying skills to yourself away from your familiar home aerodrome and without an instructor to fix things if you screw up.
I say train them to fly solo up until they have passed their CPL test and then begin training them for multi-crew operations.
If they don't know what flying solo feels like it is very likely they may fall apart oneday when they have a few hundred people onboard and the Captain suddenly drops dead!