Great question.
Now that Obama admn has given a schedule, every concerned party should be planning according to that timeline including Pakistan.
There is a best case scenario and off course the worst case scenario.
The best case scenario is that Afghanistan is stable neighbor and thus Pakistan can plan for huge increase in the trade with afghanistan. Perhaps the long awaited dream of linking Gawader to Central Asia will materialize.
The worst case scenario is that Afghanistan intellectuals will not show maturity and will not work with each other and Pakistan to create regional stability.
In that case Afghanisan will plunge back into the civil war, and Pakistan, India, Russia, Iran, Turkey, US and EU will fight their proxy wars and aFghan blood will be a cheap commodity.
Pakistan’s own FATA will go out of control and thus turn into a center of terror and mayhem.
So now that you see both the best case and the worst case scenario, the reality will be somewhere in the middle.
And Pakistanis must prepare for a more bombings, a relatively chaotic FATA and we must be ready to sacrifice the precious blood of our jawans for the next 15 years if not more.