No I disagree ISIS-K has little traction, once the Afghans are left to themselves they will deal with all foriegn influences the way they always do and that will include ISIS (ISI), never forget the traditional enemy of the Afghan is the Pakistani.Reduces the risks of ISIS-K and other terrorist groups having a resurgence.
Exit stage left now, expect Kabul to reach some sort of accomadation with the Talib and lots of raiding across the Southern Pashtun Border and smuggling into the north via Tajikistan. China will flounder around a bit in the east and Iran will expand it's sphere of influence in the west. In short the same as the past 2000 years.
Just what is our goal here? To stay twice/three times as long as the Soviets?