Was inside of 4nm on the RNAV 13 when ATC had a QF 737 at the holding point enter to line up runway 13. Passing 1000 feet asked the FO to enquire ATC about their intentions, and they said to continue number 1. I asked if the 737 still slowly taxing to the threshold might be a factor, and ATC asked very nicely for us to go round.
A few weeks later, same runway, same position for us, ATC cleared a single engine trainer to join base in front of us. TCAS showed him pretty close, so I called our distance, to which ATC sent the trainer back to downwind heading.
The tarmac area is a disgrace of a design. Any one aircraft pushing onto taxyway B closes the whole area. During CTAF QF and those 717s push without a CTAF call, blocking everyone else for considerable time.
Horrible design and at times lazy ATC.