The way i see Pakistan, it is heading towards an inevitable breakage. The world has decided so and working overtime on the program of North and south Pakistans.
It will be an ideal follow up of Germany, Vietnam, and Korea. Half for democracy and north for dictatorship wilderness.
There is nothing wrong in that as the piece was originally India, then fragmented once again for Bangladesh. Arabia was once a big region, now so many emirates and now Russia into 13 states.
Regions keep changing.