Well, as for your Afghan identity, its fine to consider youtself an ethnic Afghan. Your nationality and your ethnic identity need not be one and the same.
Pak govt double standards are the same as the double standards exhibited by every country in the world. There is probably no country in the world big or small that doesnt practice dounle standards. You can find double standards even in Afghanistan im sure.
As for whats good for Afghanistan, its seems Pathans are divided on that issue, but atleast they harbor good wishes.
Should Pakistan allow the spread of Taliban in the tribal areas?
Pakistans oly objection is too the Al Qaeda that take refuge amongst these people.. But take away the Al Qaeda, do you still see threat from the spread of Talibanism in FATA?