While the lounge situation in MEL is OT to this thread I'll make these comments:
MEL has a big plan to (again, seems like they always are!) renovate areas of T2 (International)
(see
https://www.ausbt.com.au/luxe-make-over-for-melbourne-airport-s-t2-international-terminal)
but none of it appears to address lounges. I suspect, bar the new EK and EY lounges, most airline customers are more or less happy in the basement (note the NZ lounge refit is to the existing space that's underneath the level where even the QF J dungeon is, but at least it has some (low) ramp views..
T2 is short of space, and I think MEL missed an opportunity with the extensions to handle more 380's (eg: the gate 16-20 pier area) where they could have put more stuff above that departure level.
I'd also suspect that part of this is also airline customers wanting to spend $$$ even if "better" space was available. I mean MEL would charge rental for the lounge space, like any other of the retail outlets, food etc and I'm sure the more "premium" locations would cost more.
There's probably also a factor of some airlines probably being more or less happy if customers spend LESS time in their lounges due to the less than appealing environment.
Honestly when I depart MEL, unless Iam on QF/EK/oneworld flight with appropriate F lounge access, I tend to not put in too much extra time prior to departures given the offerings are ordinary (new NZ lounge may address this somewhat).
and finally not eveyone worries about a view. Some just want a (relatively) quiet place with the expected amenities of reasonable F&B, work space, power, showers/bathrooms etc.
Each to their own.
Anyway back to BNE I'm very much looking forward to the new Dom J lounge (and associated chec in area) opening in March and trying them out