"In position reports 8000 should be 8000 feet I feel"
"What other element of a position report would I have eight thousand of?"
If passing "1-1 thousand 300" (NZ airspace) not eleven thousand 300 as many use, then not using feet afterwards, the 300 could get confused. Picky I know. Saying just 8000 could also confuse a foriegn controller, they could mis interpret the accent, whereas with a feet afterwards it is very clear.
Someone else mentioned FL 8000 feet?? FL begin at 100 and 130 in AU/NZ respectivly. Once you in Flight Levels then obviously you can omit feet at the end.
Another point is the poor use of WILCO. Many readbacks are unnecssarily long due to pilots reading the full clearance back, WILCO cuts out a lot of this unnecssary chatter.
Also "Sir"; fine say it once if you must but not every transmission - try hards!
