TBar when the 744ERs were introduced they had fuel system problems and water system problems. If I remember correctly,everytime the first few landed in LAX Boeing were there to upload new software to get the fuel system runnung as designed.
As for the potable water system,well it has never really been fixed and is running on what seem an open dated Engineering Authority.
And yes Airbus has a working party to do mods and stuff like that aren't part of normal service and rectification work.
I guess it is just like taking your car to the dealer for warranty work except that the dealer has sent a few technicians to do the work on site.
I don't think they will be here forever,but they are learning from the defects that have come up on the QF 380s first hand. Which can't be a bad thing as at times explanations can be lost in translation.