I am not sure how Pakistan's history, ideology, type of government plays into conscription, perhaps you know more than me about it and what is lacking in Pak's history, ideology, etc. I defer to your judgment here.
However, conscription as a technical tool has been used by a wide assortment of countries, in a wide assortment of ways. It was never used by the colonial British Indian Army because the local population was hostile to British occupation. I am assuming that this phase has ended.
There are certain common misconceptions about conscription. Conscription doesn't necessarily mean every able bodied man has to join the front. It can even start with small numbers - like 10-50 thousand. Pakistan Army has not engaged in conscription, that is true. I believe it is more to do with still having the psyche of the British Indian Army and deep down somewhere, imagining that the goras knew best.
This is why, despite every indicator pointing to conditions being most opportune for conscription, and in fact a need of the hour, Pakistan Army refuses to even give it a try. People like you and me are supposed to be thinkers, people who make decisions based on the merit of something, not based on obtuse neo-colonial pseudo-ideologies.
I for the life of me, being a Bangladeshi, can't understand why we have servile looking bronze statues of our colonial era as glorified pieces. As if we are little House Elves in Harry Potter, glorifying how well we served our masters. I personally cannot understand why these bronze statues litter all over Dhaka. With little brown guy statues standing like house elves, and great white masters posing picturesquely in grand horses. I hate going past them. I hate it to the core of my soul.
Mental slavery, as Ibn Khaldun writes in Al Muqaddimah, takes 40 years past independence to get rid of. Unfortunately something seems wrong - we are well past that 40 years. It seems our institutions, like our armed forces, are replicating the disease and inculcating it to the next, thus it is not decaying but growing...