Before a fire-forget type anti-tank missile, I think Pakistan should immediately buy a 2,75 inch Cirit like cost-effective missile system which is going to be used against insurgents from longer ranges. Turkey is leading in 2,75 inch lazer guided missile sector and Cirit is the first industrialized product which is offered to World market before USA, European and Israeli equivalents. In UAE trials, Cirit missiles reached %100 success and so UAE ordered 10,000 Cirit missiles and many other countries including Europeans are on line to sign a deal. It is on schedule to equip Cirit missiles on German tigers as well so A new deal with Eurocopter is also signed.
BTW, Cirit is hghly effective against moving targets as well. Cirit successfully engaged a moving target travelling at 60 km/h while the platform, it was fired from was moving at 220 km/h (120 knots).
I mean Cirit like small but effective missiles will be a game changer of assymetric combats so Pakistan should buy thousands of them in a short time to prepare a silent kill for Taliban.