Heliport:
eg The FAA allows helicopter pilots to depart from the low flying rules as long as it can be done safely.
We have been round this buoy before but, as was previously stated, there are no low flying rules for helicopters in FAR 91.119; i.e. they are not required to apply the ICAO Annex 2 Rules of the Air (except in International Airspace).
You also do an injustice to the Flight Operations Inspectorate in stating that they do not influence what is produced as Regulations - they do.