Nah brother not one big province in fact there needs to be a break up of all provinces, one can be called Pashtunistan, Afghania, Khyber etc. Same for Punjab and other Pakistani provinces.
I used to say Pakistan need to kick out all Afghans and mine the durand but I now realize that it was the wrong idea. It is true that most Pashtun have family on both sides and many Pashtuns rely on business across the durand to provide for their families we cannot disregard this. Instead Pakistan should work to naturalize the refugees and absorb Afghanistan instead, then make 25-35 provinces.