The reality is that only four calls will be mandatory from next year and it comes down to commonsense about making other calls.
- When the aircraft enters the "vicinity of an aerodrome"
- Immediately before joining the circuit pattern or, in the case of a straight-in approach, at least 5 nm from the threshold of the runway
- Immediately before, or during, taxiing
- Immediately before entering a runway.
For myself, the turning base call with intentions while the wings are turned to make me visible - remains a desirable transmission - subject to circuit traffic.