Fair point. Except what about choice of seats? What about the time consumed at the gate, specially if a delay, to process upgrades.. remember on an A380 you're potentially talking 10s of pax. That and the standby list.
I get it you're pissed and I would be annoyed too and you know what your ultimate choice is to take your business elsewhere (unless you're under a work travel policy or somesuch).
Tell me, at T-20 when you received the PE upgrade were you happy (enough to get that given, at that time, J was full?
Hindsight is fantastic but you and the airline can't always forsee what will happen.
In an ideal world sure, QF's system would remember your(and other) requests and say hey a J seat popped up, better give it to them and then upgrade a WP from Y into PE).. makes perfect sense.. I agree. Realistically though, given how clunky QF's systems are, and the way they process upgrades which you experienced.. these things will happen.
I remember a year or two back I was on another airline flying in the US. I had a confirmed F seat on flight X. Due to an arrival delay (on, ironically, QF) we landed right at departure time of that flight. I noticed that, even though I was a noshow for that flight (and due to being in the air had no way to contact the airline to change my booking because yes, I'd gambbled with separate PNRs and not a long enough connection time... thanks 4h delay lol) that seat actually went out EMPTY... I was really surprised that they didn't close out the flight, note me as anoshow and upgrade someone into that seat.
I wonder which would be worse? I don't know.
At the gate getting a flight ready to go agents usually have a lot of work to do, including processing of standby lists and the like. If a last minute J seat opened up due to a misconnect or cancel then that staff member got very lucky IMO.
This is not the first time I've been accused (more or less) of either working for QF or being an apologist... no... I am however a realist with a much experience as anyone in this thread, specially all our fellow P1 members.
Maybe find a constructive use for your anger? Perhaps contact QF and make your "do it at the gate" suggestion for upgrades... or alternatively take your business elsewhere (like Juddles, TonyHancock and yes even myself in some ways). We all have choices imo. Like that 4h delay which had a knock on effect for me personally but luckily worked out quite well in the end, I choose to understand sometimes you know things happen not quite the right way and life can be unfair. I also like lemonade