I think we can simplify the CTAF inbound broadcast requirement to:
Traffic [aerodrome] ABC is [state number] [nautical miles / statute miles / kilometres / other distance units], measured by [GNSS / DME / DR / WAG], [state direction referenced to aerodrome] measured by [DG / Mag Compass / DR / WAG], inbound on descent from [cruising altitude] with altimeter set to [QNH setting] and calibrated to [VFR / IFR] standards, estimating circuit area, by which I mean [overflying / joining crosswind / joining downwind / joining base / joining straight in approach] [nominate runway], at [nominate time] [local / UTC] by [wristwatch / GPS / WAG].
Simple.
