The rationalist response to that SP is there will be far more cost cutting and outsourcing if QSA goes away and QF focusses on domestic only.
Outsource everything to do with International, heck, run the thing entirely out of Dubai after EK buy it. Keep all the feeder network domestically and let the long hour higher cost sections be handled by the $100 a week Thai flight crew you mentioned.
Fly the 73X and 320 fleet to Air NZ for work. Short hop, effectively a domestic route in most people's eyes anyway. That is even worse than the previously proposed regional solution where one did 73 work and the other 320s.
Outsource all terminal staff to cheaper competitors, same wages will be paid but benefits like staff travel etc disappear.
Management also disappears to a great extent, all you need are purchasing officers and contact administrators to ensure the subcontractors deliver.
Maintenance on demand, LAMEless tarmac, all those things will happen in as close to no time at all as they can possibly do it.
That optimises the profitability, at least in a spreadsheet. And do you think a new team free of QSA would listen to "we can make it better internally" or would they go "you lot have had forever and you've ballsed it up so now we're outsourcing"?