The best comment I heard so far with regards to the Niki Yanofski's version of the anthem was it sounded like the American Idol version of it. I don't know if they (the directors) were trying to portray "effortless" but it came out too rehearsed, amateur, tries too much.
In contrast, Julie Anthony's rendition of Advance Australia Fair in 2000 was quite simple, powerful, without trying too hard.
As to the video above, I am a big fan of the "transmoflection" look so I love the set-up, but is there smoke coming from beyond the curtains? is the cauldron still burning?