Afghani Pashtuns will not do anything, because of a number of reasons:
let me go through every point you presented:
1) They share the same heritage as Pakistani Pashtuns (Pakistani Pashtuns are their brothers), and Pakistani Pashtuns love Pakistan.
yes, they share similar culture and heritage with Pakistani Pakhtuns, but do they share anything with the vast majority of pakistan which is comprised of Urdu speakers, Panjabis, Sindhis and balouchs? With due respect to all my pashtoon brothers and sisters, but why should the pashtoons be unltimate point of every decistion in pakistan and Afghanistan? How about Panjabis, Sindis, Tajiks, Balouchs?
2) They are poor and underdeveloped.
Yes, unfortunately, this long imposed war have turned us like this.
3) Taliban (Pashtun) is a tool/toy of the ISI. Which is why Afghanistan has been Pakistan's playground.
Agree.
4) Pakistani Pashtuns outnumber the Afghani Pashtuns, and are fierce supporters of Pakistan.
Why do you keep on mixing up the pashtoons of 2 countries? yes, pakistani pashtoons are patriotic, i know that, but how can you say that the pashtoons of afghanistan have the same feeling for pakistan? As a matter of fact they want those pashtoon areas of pakistan to be part of afghanstan, it has been their(afghan pashtoons) desier and gov policy since the birth of paksitan and till now, even the taliban have the same thing. otherwise the taliban would have signed clearacne of durand line long ago while they were in power. and dont forget that the taliban of today is not the same as taliban's yesterday, they are tired of isi's double game with them, once they clear their head of the fights, you will then see their policy with regards to pakistan.
5) Most of the Afghan troops are addicted to poppy, and even the Americans and NATO forces have problems in trying to "keep them on mission/track". Pakistan's army is one of the best in the world.
That is hardly relevant to what we talk. Although i quite agree with you about this problem in afghanistan's army.
6) Afghanistan is a fragmented country, where networks and tribal areas "own"/hold different areas. For example: the Logar province is in the hold of the Haqqani network, the Kunar Province is in the hold of the Hekmetyar network, and these are different factions. Afghans have no sense to loyalty, they are easily bribed and they'll do anything for money.
This fragmentation which is sadly based on ethnic divisions is the number one reason why pashtoons of afghanistan will be firm to put their claim on NWFP, the country is seeing ethnic based nationalism, every ethnic group will look to boost their power, how can the pashtoons of paksitan do this? they will only be able to do that if they take NWFP and make it part of afghanistan, it makes sense, doesnt it? but if the country is not divided on ethnic basis, there will be a national unity, people will think about afghanistan as united country rather than having ethnic desires. i just hope i did explain things exactly to you, because my communication skills are not that good and people dont get my point most of the time.
And btw, Pashtuns constitute of over 40% of Afghanistan's total population, which does make them the largest ethnicity in terms of population in Afghanistan.
So? and does that mean they wont speak about NWFP?
it looks like you delibarately ignore the points i make.