PIA will probably end up being to Qatar Airways what FlyDubai is to Emirates. A budget airlines. PIA will probably just operate A320s and a few 777 for the long haul flights to the West.
It could be as speculated in your post.
The standards of recruitment/selection of staff of these Arab states are entirely different from Pakistani standards which are without merit and mostly based on political or commendation. If you could remember the sale of PTCL to the UAE, most of the senior management scales were revised to such standards that a vast majority said goodbye to the company. Further manpower was reduced according to the requirements and every 'chachas/mamas' were gone. Only those retained who do the job based on skills and sincerity to the organization.
So in this case, the large number of manpower will face reduction to 'appropriate' with revised scales to the Gulf standards based on their skills, punctuality, and sincerity.
Though it is a fact that PIA laid the foundation of Emirates with the wet lease of aircraft and total engineering support. On another hand, that is also a fact that Emirates is thriving and PIA being an international symbol/icon in the decades of the 60s/70s was destroyed by the politically based labor unions that were totally infertile to deliver but played a major role in the destruction of a renowned institute of Pakistan.