Long-range SAMs are great for high-level air defence coverage, but Pakistan needs to build depth in mobile short-to-medium range SAM systems. Not only will these systems help guard against SEAD and DEAD threats to the long-range system (whatever it might be), but other high-value targets.
Pakistan basically needs a counterpart to the Israeli SYPDER system. There are two routes: collaborate with Turkey on the HİSAR or work with South Africa to develop a SPYDER counterpart using the A-Darter and Umkhonto.
I think a ground-launched A-Darter (7-12 km) and Umkhonto EIR (35 km) would be a good start, but collaborating with Denel to bring the Umkhonto ER (60 km) should be the goal. These can be supported by a search and track AESA radar, perhaps the Saab Giraffe 1X or Aselsan Mobile Search Radar (MSR).
Granted, investment will be necessary to bring these systems to fruition, but in-exchange Pakistan can push for local licensed manufacturing. Speaking of the Aselsan Korkut SPAAG, I'd push for producing a comparable system at home, but by license-manufacturing the Denel Dual Purpose Gun (DPG) and pairing that with electronics developed in collaboration with Aselsan.