There is no nationalist sense as there was in Iraq that was at least a starting point.
With more troops we can conduct more raids that's all and create more garrison's.
Nothing will hurt the Taliban more than eradicating poppies/opium. Nothing will begin the process of nationalism more than roads and transport.
Eventually the Durand line needs to end and Pahktunistan begin, that would require Pakistan's support. The problem is the shia Hazaras that are spread all over and would be killed off.
Right up there with them is Bolivia: a new government every 18 months on average from 1824 to 1970, and some of the worst, most feral dictators in South American history, e.g. Melgarejo, who shot his predecessor and then hanged the British ambassador when someone thought he had commented on the shooting of Belzu'. Queen Victoria, hearing the news, promptly and indignantly crossed Bolivia off her wall map.
I've always inclined to the idea that the fractiousness and quickness to violence of the Pathans and Bolivians has had something to do with chronic hypoxia.