Supervision
The case above is highly relevant to this thread, as the individual above was applauded and promoted for being a 'whistleblower' at 616. He reported his CO, CFI and duty instructor to the centre, where he was employed, following what can only be described as a fit of pique.
The deeply flawed inquiry that itgenerated may have been central to, or at least reinforced the view of, theneed for fewer VGS with a higher level of on-site supervision.