70 years of history in a country which have native ethnicities dating all the way back to ancient era is nothing but less than few minutes of history. The biggest mistake people make is when they limit Pakistan's existence to 70 years ago; as if this region magically appeared after 1947. Yes, the new geographical boundaries were made. History is full of it, nothing new, but the region and ethnicities stayed the same. Pakistan is a natural country if you look back in history, one will always find Punjabis, pashtoons, sindhis, balochis, kashimirs living together. The generation which had longing to historic british indian era is no more on realms, their children which were half confused are phasing out from mainstream. In one generation a strong Pakistani nationalism will emerge without need for any other ideology but also, to add, it will rather seek for lost land, lost tribes for a larger pan punjab, pan pashtoon expansion. And you can actually start seeing the glimpse of it already; may be it's just flickering for now but it's starting.