It might help if Australia stopped building airspace for 737's and 320's. There are bigger aeroplanes out there! And whilst we can work within the confines it does mean we might need to slow a little and then speed up on a dive staying in the airspace. Or slow down, configure to be "draggy" enough to stay within the airspace. Melbourne is particularly bad.
Also remember a companies SOP's might be different to yours and have speed, config, ROD's restrictions.
Lining up a 300T plus aeroplane from "B" on 16 does take a bit of effort because somehow it wasn't possible to flatten out YMML a little better.
It would help if they used "behind the landing aircraft, line up behind" instead of waiting for it to pass.
But yes Australia did invent aviation. Don't start on the ludicrous LVO's.