One thing for sure is that China could make a much modern version of the Chinook and Black Hawk. The Shenyang J-15 was an Su-33 copy and it was better than the Su-33.
The reason why their eyes are like that is because of the Sun. Since it's usually bright. Another is that the fats in the eyelids can keep your eyes warm.
Up to 800 million US$ per ship (Type 052C)
I'm not sure for Type 052D, but it would be much more expensive.
Anyway, I don't think Pakistan could afford such powerful ships.