Pakistan, as I mentioned in my comments, is an extremely narrow objective. The foreign aid community has given Afghanistan consistent assistance in avoiding addressing the main issue, which is recognition of the frontier. If anyone were to deliver that to Pakistan simply by opening a dialogue with Afghans, who have resisted this one policy request from Pakistan for a very long time, then Pakistan is very likely to normalize its relationship with Afghanistan and be a very co-operative conduit.
The main problem with Afghanistan and the west is that it's perceived to be a religiously intense country, where you have Takfiri political interests but no religious party has ever received more than 5% of the vote at the federal level. Not in the current Parliament, but in the previous legislature, about 20% of the legislators had dual citizenship with the U.S., Canada and the U.K. The body politic there is quite sympathetic with Liberal values. Obviously they're in a difficult spot for strategic reasons, but Pakistan is far easier to engage with than is frequently portrayed.