IMHO ... AvRID/PAC/PAF can look at collaborating with Turkey, Ukraine, China, Brazil, etc on the critical inputs that can go into a FGFA (maybe work with 2+ on each area so that we have redundancy). Think: engines, composite materials, flight control system, avionics, radar, munitions, etc.
However, the PAF should stand behind AvRID's design and develop their own fighter (using inputs from multiple partners). So, no TF-X, no FC-31, etc, but our own FGFA using technologies from various places (esp. Pakistan).
Let's push joint-ventures and partnerships to layers below the final product and build relations more on R&D than on buying XYZ from overseas. This is the way forward IMHO.