Pakistan will have to stabilize the fundamentals of its economy, attract FDI to modernize and become more competitive in areas it already has a significant presence, and then use opportunities like the Reko-Diq to build up sectors like mining to better explore and exploit its own resources.
Transit trade, not so much in direct revenue but building up industries like petrochemicals and pharmaceuticals for domestic consumption and export based on oil and/or gas flowing through the country. FDI investor looking to capitalize on the potential this resource. This is dependent on Pakistan striking a good deal with the countries the oil is sourced through to buy oil and/or gas at a discount to give the nascent industries a resource at a competitive price to have them set up their industries in Pakistan rather then somewhere else.
Pakistan will also have to fundamentally integrate itself into the region, but try to minimize what accommodations it makes with India to preserve its interests. A rail corridor to Central Asia allows a route for the ventral Asian out but also other potential investors in, like Gulf countries and the Europeans.
Like Japan and South Korea, domestic industrial developments could help the interests of superpower allies. Pakistan as a strong vanguard against India and its regional hegemony maybe a valuable position to support by China. A containment strategy keeping India bogged down regionally.
Finding a way to accommodate both of the era’s superpowers and their companies/investors, is the kind of balancing act pakistan will have to thread, but to do this reforms, in terms of opening up, have to be done at home first and foremost. Germany is probably a better example of this, especially in the post Cold War era. A disruption to the balance would have dramatic effects, but it’s the only way to benefit most from the possible opportunities.
But all of this comes down to how well the Pakistani elites manage the country/resources/human capital/market access and balance the competing international partners, as well as how they develop regional relations, especially to Central Asia.