If you like proper views, you don't know what you are missing, till you have made at least one visit to the SYD QFi F lounge.
Then you will miss it.
If you have the chance, take an EK flight SYD - CHC in F with a QF flight number, I know, not everyone can afford it, but if you can, do it once.
Then you will get to know it.
However they refresh SYD QFi J, it will never win over the SYD QFi F lounge or the MEL QFi F lounge, or even BNE QFi F/J lounge.
You can update the furniture and loos all you want, but if it all you see is a roof, or no windows at all, or fake wall with a curtain in front of it have it a pretend window (ala MEL QFi J lounge), its not really any good in my POV.
Sorry, was on the bus yesterday when I mentioned about the MEL QFi J lounge in basement.
Guess that was the only spot QF could put in a J lounge during the developments of MEL int airport.