This is after a long time that Pak has got 5-6 pacers with such potential. Since 2007 Pak didnt produce a lot of great prospects except Asif and Amir. Unfortunately Amir and Asif cut short their career due to their own faults, while Amir is back but nothing can undo the damage those 5 years of no training did to his bowling muscles and forcing him to retire from tests. Junaid looked decent at the start but then knee injury and problems effected him a lot.
At this point of time we have:
Shaheen Shah Afridi (19)
Naseem Shah (16)
Muhammad Musa (18)
Mohammad Hasnain (19)
Akif Javed (19)
Haris Rauf (24)
Sameen Gul (20)
With the legacy of Sarfaraz Nawaz, Fazal Mehmood, Imran Khan, Wasim Akram, Waqar Younus, Shoaib Akhtar, it took long time for Pakistan but atleast we have few real prospects at our hand. The biggest gap in this pace factory was from 2010-2016 with almost nothing after Asif and Amir.
Yes we have had Umar Gul, Mohammad Sami, Shabir Ahmed, Abul Rauf, Wahab Riaz and few other decent bowlers in between but they werent of the class associated with Pakistani bowlers.
Even if couple of the bowlers I have mentioned turn out to be of international class, it can do world of good for Pakistan in the next decade or two as for the decades of 80s and 90s only Imran, Wasim, Waqar and Shoaib were enough to cover the whole period.