So if not from the 737, from where?
Thinking about the airline's crewing issues, the upcoming cascade only goes to the 787 via (some from) the 330 to the (the rest from) the 737. The 737 is the current home of the airline's future. If there was a type freeze for both ranks from where would the 330 and 787 pilots come? I don't for a second expect that DEC and DEFO positions will ever happen at QF, especially not on widebody aircraft.
That Qantas has to train perhaps an additional 200 737 pilots next year is a natural consequence of both the lost decade and the unavoidable reality that the 737 is the junior type from which all progression must flow. ie: tough ****.