Johnny56 I understand where you're coming from with respect to the Cert IV, it's a consequence of organisations not understanding what it is and when it's desirable to have, so put it in our application wish list and see what we get.
This all came about from our legal system and the argument of accountability, how can one be accountable if you were never trained and certified competent to perform that task by a person qualified to make that assessment. All the critical things we do require a licence, vehicles, electricity, gas, essentially anything that can hurt someone in untrained hands.
Then we come to those matters that are not all that critical but still require a high level of competence. That training and assessment needs to be conducted by a qualified person, where that competent person has no appropriate qualification at all, it would be necessary to hold at least a Cert IV in training and assessment in order to be deemed qualified to issue a certificate of competence.
In Aviation as it applies to all things Flight Crew Training, there is no higher qualification than a Grade One Flight Instructor.