Virtually 0 for the 12 week course. 60 week course plenty, but CX needs the 12 week guys as you can obviously hire 5 x as many guys over the same 60 week period.
It's not dire enough for CX to improve the package yet, they are looking at other ways to resolve the problem such as 3 crew instead of 4 for long haul, to do this though it looks like they will have to change the P2X rating to a P1X rating, another made up rating between CX and the HK CAD that is only recognized in HK.