That's an important point, Tequila. The power relationship between the Pashtuns and the other ethnic groups is not what it's been historically and this factor is, and will continue to be, a significant barrier to creating a viable, representative and whole Afghan state.

I think the real problem with the Afghan government is overcentralization. Almost all power and money flow from Kabul and, in a society like Afghanistan, it's not surprising that little makes it down to the average Afghan. Afghanistan should be a decentralized federal system with most power and control of resources retained at the local level. Personally I don't think it's possible to make the current system provide any kind of meaningful governance outside of a few major population centers and consequently, I don't think the current government will be able to muster and field forces for a COIN campaign.