I don't see what CPL has to offer. Honestly. I have done the theory (and passed the exams, under the old apparently no longer valid scheme prior to the multitude of 1990s changes). Yes the theory is helpful, but not a tie breaker.
Mint CPLs are simply not that well qualified to make a difference. In fact their experience levels are positively scary.
But someone asks why not.
1. Lack of good dedicated instructors at club level.
2. Class 1 Medical.
The RAA arguments are also very valid. GA must have access to a pool of local, stable, mature and dedicated instructors (like RAA has) or it will die.
Instructing is not some form of social security for pilots waiting for the RHS of a 737!!!!
Mind you, I would limit a PPL instructor to 'basic' stuff like 'simple' aircraft (max 4 seat, fixed gear and prop) and insist on 250+ hours to get away from the problems associated with mint CPLs.