You know what they do to the bodies of Abducted Balochis ?I have a different perspective on this. Even if the PA did declare all their casualties, it wouldn't make a difference to the general population. The reason being the PA has a well oiled information warfare network which can spin this into a jihad. Civic awareness, anti war sentiments, anti PA sentiments , etc which aren't well organised to begin with nor carry much heft within the civil society of Paxtan, will stand no chance against the state narrative of Jihad fi sabil'illah & nazariya e Paxtan.
The principal reason why the PA isn't going public is to less to do with protecting their aura of invincibility among the general population & more to do with their concerns of how the ordinary serving PA jawan may react.
Like us, the PA definitely faces an issue with obsolete arms, lack of self protective equipment, platforms, etc due to severe financial constraints, except that it's much more worse than what the IA faces plus the fact that they're facing running Insurgencies or unrest within every province of their nation.
Having said that, I also believe they haven't fully factored in the impact that micro blogging sites like Twitter & social media like FB has on free flow of information or if they have , they've certainly been unable to counter it.
They throw them on the roof of their home from helicopter to make the families feel helplessness.