This is just a really strange thread - China and Pakistan developed the JFT to replace 3rd gen acft in the PAF inventory and in the inventory of other Air Forces -- So why would they not develop platforms to replace the F16 somewhere along the line? What kinds of things will have changed to make such an endeavor unnecessary? Really, in the near future, it will become necessary to look past the F16 -- and it can't come soon enough for the likes of me.
Well, ought it be a US platform that PAF should replace the F16 with, hell no! as little from the US as possible and maybe in the future (just being polite) US and Pakistan might discuss (not procure) weapons systems/