Megan,
The low fuel procedure that is being discussed here came from ICAO. Other authorities changed to it about 3yrs ago. The major change from what was used originally in the vast majority of the world then, was changing from a PAN call when you thought you maybe landing with less than Fixed Reserve (30min) to a Low Fuell call. There was nashing of teeth when this happened, as it was considered a downgrade from what was already happening. Pilots argued back then that they would still make the PAN call instead of the Low Fuel call. But with time, some thinking, and actually reading the new procedure, they eventually came to understand that the change occurred because not all authorities in the world recognise what a PAN call means.
So, it's not some CASA desk warmer that made this one up. It is an ICAO recommendation that some CASA desk warmer has now complied with.
Can I ask what your legal Min fuel was when you operated these heroic flights landing with just minutes of fuel onboard? Perhaps this catching up to the rest of the world regulation was designed to protect persons such as yourself?