Pace bowlers are not produced in factories. And even the last factory in Pakistan shut down few years ago!!
India with all their resources, couldnt yet come up with someone who can replace Zahir Khan and even Zahir was nowhere close to Kapil Dev. After the Shoaib Akhter, Sami, Gul, Pakistan is settling with mediocre Aizaz Cheema or Junaid and their ace bowler is actually their spinner.
So, if Bangladesh cannot come up with the next Mashrafee or Syed Rasel, its not a surprise because our domestic league doesnt allow pacers to grow and we don't have any real academy for pace bowlers. When a all muscle missing Shafiul, Nazmul is in our pipleline.. you might as well call the factory closed!!