Lead Balloon, I believe you are correct about AMROBA, such is the memory of a senile old man. But I do remember being at a CAA(prior to CASA) conference in Darwine in 1992 ish when the "new" regulations, at that time, were being discussed. Amongst these was the removal of LAME privileges to carry out 100 hour/annual under the auspices of their own licence. It was told at the time this was as a direct input from the maintenance organisations.
Interestingly, it was at this time that the CAA legal department had come up with the concept that an aircraft release to service (Maintenance Release in Australia) would deem an aircraft serviceable for the period of such release, they were told in no uncertain terms that we would no longer release aircraft if that was to be the ruling.