But, by playing Shadab for Yasir & Fahim for Bilal, can PAK restrict Kiwis for 274? These 2 took 8 of the 10 wickets - by replacing them, Kiwi's score might have been 472 instead of 274 ....... then Shadab & Fahim would have required to add 100+ with that 348 just to save the game, which I don't think is that easy ..... in fact, I think they are too ordinary to even think of so. PAK can't compete in a Test with 2 nightwatchmen opening, and tail starting from No. 7 - plain & simple. To compensate that, we can think of many alternatives - won't work. Why Shadab & Fahim only, PAK can drop all 4 of Hasan, Afridi, Yasir & Bilal and pick Yamin, Aga Salman, Shabad & Fahim - that makes it the best tail in world, and all 4 can bowl legally (Umpire won't call them for chucking) ......
Or may be, PAK can drop both openers and pick 4 bowlers + those 2 "all-rounders", which should make a robust bottom half, because what I understand is, it's not about batting capability, rather the position one is batting makes it happen.
It doesn't work that way - everyone has his role in a team game, and bowling is a specialized skill. 90% of PAK's problem will be solved, if opening pair can average 45 (pair's average, not individual - Tamim, Imrul averages 45+ for almost 2.5K runs, therefore I take that as minimum bench mark).