Some very early thoughts on this--because this could be 'the pivotal moment' since August 15 events:
1) US Wrapping up its presence even before Aug. 31. Already, if you saw Blinken's Press Conference yesterday, he hinted at only 1500 Americans left and implied they are non-traceable and that evacuations will continue after the pull out date of Aug. 31.
2) US decides to stay on and even more troops BUT even if a single American is dead in the explosion then the already consensus to pull-out will be very angry over the extension of stay. Unlike in most countries of the world, the 'public opinion' in America has a gigantic impact on even strategic goals--no one wants to lose the elections where the margin of error can be as low as a few thousands votes!!
3) US blames the ISIS-K and mentions that even the Taliban were targeted to 'sell' the Taliban as the new savior from ISIS. You know, enemy of my enemy is friend? ISIS is a far more potent threat to American interests then Taliban ever were or could be.
4) Taliban hunt down some ISIS and shoots them and that makes, finally, the big news for the Taliban credentials. They reportedly shot some ISIS leaders in Kabul jail after Aug. 15
5) This is THE PR opportunity for the Taliban if they grab the moment. From condemning ISIS to becoming a victim themselves from ISIS to 'protecting' American troops which are still there....