Well i just gave my opinion that nothing is too unbelievable anymore who knows a couple of decades later or more, the issues between the Muslim states are resolved or they are bound to do it because they might be facing a common enemy. I am not saying that we can't or shouldn't implement that ideologically within Pakistan.
Yes you are right. If we want to experience the human potential of such bloc, without having to go through the massive effort to unite middle eastern countries. Then we can do this on our own, with the territory of Pakistan.
We can adopt the nationality/citizen policy of USA, that any foreigner can acquire the nationality of Pakistan and become a Pakistani, that mean, Muslim from around the world, Arabia, Africa, Turk, Palestine, Central Asia, Indonesia etc, can migrate to Pakistan, acquire Pakistani citizenship, become Pakistanis, and have the same rights and duties like any other Pakistani.
We can enjoy the diversity of Middle Eastern bloc at home, and the human potential that comes with it.