First of all I want to note my own lack of knowledge of the terrain along the LoC. Also, my intention is to raise the topic and via this forum make sure relevant people are thinking about it.
As far as I know, the mountainous terrain along the LoC does not lend itself to mass mobilization of armor and infantry. If the Pak army is serious about freeing Kashmir at some point in the future, it needs a plan for mass mobilization. To me, the most optimal way is through air drops. This means having a large fleet of cargo aircraft and regular practice of air drops involving both infantry AND armor. Especially, I am unaware of any exercise by Pak army where air drops of armor have been practiced.
Moving away from LoC, let us discuss how such a maneuvor would unfold in practice. Air superiority will be a must, along with complete clearance of enemy's air defence. This will be followed by the actual drop.
The situations where such a technique could be employed are:
1. Completely unexpected flanking/surrounding of the enemy from behind, or from the sides. This will be beneficial in multiple theatres: the plains of Punjab, deserts of Thar and Cholistan, LoC, and the rugged mountains of Afghanistan.
2. Avoiding areas of high radioactivity. In case the Nasr comes into play in response to an Indian cold start, such a maneuvor would be highly beneficial to get own troops across radioactive areas.
In short, air mobilization is an extremely useful tool in the general's belt and I would like to see our army being capable of employing it as and when needed.
EDIT: After seeing multiple posters making the mistake, I need to point out this thread is about developing future capability rather than an analysis of current situation.