na, the seats are makeshift shadi hall seats. Its still a concrete slab. They just bringing in seats from an event caterer and fans have to pay the seat rent on the ticket price.
My assumption for why the dont enlarge the stadium, even though they have space is because, the peremeter of the stadium or the bottom area of the stands have been rented out to restaurants. A food street is being operated in Rawalpindi under those stands, so PCB gets rent.
If PCB further makes the stands large, there is space so it is possible to add a second tier, what will happen is that the restaurants will lose its space, hence less restaurants will be there, the food street will be abolished and PCB wont get monthly income from these businesses.
Also, when a cricket match takes place, the food street is shut off, and restaurants are not allowed to cook or sell food. Hence, fans only eat chips and pepsi that is sold inside the stadium.