A good start on instructor retention and to ensure some quality, would be to offer two streams:
1. Experienced old farts who have an appropriate check & training background and who are approaching or beyond normal retirement. It would have to be financially attractive for said old farts to give up their daily round of golf.
2. The top 10% of their own students, trained at QF expense and given QF seniority from day one of the instructor course, so that they are not disadvantaged. To remain as instructor for two years, then move in accordance with their seniority. Paid at least the same as their cohort while instructing.
If they think that the pathetic award rate for a Grade 3 will have instructors falling out of the trees or migrants bashing down the door just to live in the lucky country they are in for severe disappointment.