Completely agree with you Guv. Not sure QF can replicate some of the perks that TG (for example) offer. After a long flight in QFFF you are standing in a queue for what seems like an eternity to get to the kerb. My experience in TGF to BKK is a very short trip from aircraft to kerb via diplomatic immigration. Last one was less than 10 minutes.
I wonder to what extent would QF be able to streamline the inwards arrivals processes for Australia, i.e. be able to use a dedicated or special passport control lane. Other carriers may not like that and cry foul. Or, some authorities in the airport management might not think that is fair and disallow it (besides, those authorities have already made a concession and created "express" paths - what more do people want?).
Then again, for Australian citizens with new passports, passport control is 99% a non-event (and 0.5% in the remainder is because some dumb schlub has screwed with the SmartGate system). I'd be more concerned about how QF (or any airline for that matter) can get luggage quicker off the plane and into the terminal for reclaim. Seeing as that might involve some sort of Ben Hur effort on the implicated unions, I don't see that improving any time soon. And then of course there is priority baggage, about as consistent as predicting Melbourne's weather. And again, Ben Hur and unions....
No decent kind of escorting staff service will streamline the customs process. Unlike in Thailand where you'd need to have been suspected of something big (like drugs),
everybody on average will be bottlenecked at an Australian customs point because that's exactly what AQIS and Customs/Border want to do (or have to do, I don't know).
It might be nice if QF maintained a desk or meet-and-greet service on the landside of arrivals, e.g. for escorting arriving pax to their drivers, taxi ranks/Uber-compatible meeting locations, sold train tickets, etc.
Personally, I'd like if QF could section off a portion of the terminal at SYD (and maybe MEL) for exclusive use for their F pax (and maybe the P1s and possibly 2.4k WPs, the latter perhaps only if they are travelling in J or F), or even a separate terminal building. Similar to how SQ have their bit in SIN T3, or LH have in FRA (the best in this example, though there are a few faults / catches) and AF have in CDG (if I'm not mistaken). That said, I don't see QF doing it for the few F pax they have, nor can they acquire a new building to do it, it'll be way too expensive and poor ROI (most likely the evaluation by the QF bean counters), and finally SACL and the company that runs the duty free operation at the airport will likely throw a hissy fit against the idea or demand a king's ransom in compensation (similar to what BA had to bend over and cough up for their innocuous Concorde Room lane at T5).