Devastating. It's bordering on genocide or about to come close to it any moment it seems
The religious minorities(including christians, ahmadis who ever else) should create their own large community in one area and arm themselves with rifles, shotguns, handguns and as much firearms as they can.
They should fight back with guns,knives, guard dogs and whatever they can every time a religious mob come to harm them.
The mobs will stop coming if they realize they'll have to pay a price of their havoc their causing.
Not only are you asking for a full blown out civil war by suggesting this, it'll be much more easier for the Taliban, Lashkar-e-Jhangvi and other terrorist groups to massacre whole communities knowing where the Pakistani non-muslims are finally at. Not to mention how absurd this suggestion is...
Pakistan is a failed state, but sanctions only make a country poorer, thus breeding more extremists, criminals, murders, thieves from those already surviving on nothing. And with Pakistan's political tensions with India and the USA, the last thing it needs is to lose their nukes (not that I support nuclear weapons). Ultimately the poor lose out and the middle class get poorer while the rich can simply move to the Middle East or the West.