I'm WP, on my last trip I booked all QF flight numbers through the Qantas website, of the 4 international sectors, I was on Qantas metal once. I was upgraded to business on one sector (not the Qantas one), was personally greeted by the CSM on all non Qantas flights and was given fast track through Dubai for both transits. My bag at Frankfurt was one of the first off, on a carousel which was dedicated to high priority luggage only.
On the sector that was on Qantas, no formal greeting, no extra goodies, in fact from what I could see in my area of economy, no freebies were given out at all, no eye shades, socks etc.
In other words, no shadow, no business class wines, no business class drinks, no business class amenity kits, no business class headphones, no business class PJs, and no extra attention from any crew member, senior nor junior.
I had to ask for an 'express lane' arrivals card and I had to wait for it, which meant I was the last off on the top deck.
I would like to hear from any WP's that have had the sort of treatment you seem to think happens to WP's.
I do realise that this next part isn't entirely the fault of Qantas, but my bag was one of the last off at Melbourne along with another dissatisfied person with 'first class' and 'priority' tags on their luggage, this I must admit meant asking for and getting an 'express card' was a waste of time.
Qantas has my money, even if it wasn't a huge amount, I don't know how their relationship works with Emirates, how they split any presumed profit.
My experience last October wasn't a great deal different, except I was a 'gold' then and I didn't get an upgrade, but I did get an amenities pack, along with everyone else in my area on the Qantas sector. Personal greetings from Emirates staff, nothing special from Qantas.
Previously I would have preferred Qantas metal and would have flown them to Frankfurt, but it makes it hard to justify flying them if they don't fly to the destinations I want and don't seem to appreciate my custom.