Why not think and plan for the day we can do for ourselves:
I think that we are over the biggest sanction-able "Offense
That means there are a whole bunch of things Pakistan can be sanctioned for -- and trust me, this problem of sanctions and such, these are a structural problem so far as relations with the US are concerned...This tool will be used more and more by the US, because Pakistani and US relations are not rooted or grounded in anything other than immediate policy objectives.
See, the US does want to present herself as part of the solution, but friends, Pakistan and US articulate the problem differently, in essence they see two different problems - The US has no intention of being of assistance in furthering Pakistani interests and the US will not accept Pakistan not assisting the furtherance of US interests. Pakistan simply will not agree to destroying her national interests and the US insists that Pakistan do just that.
Today whatever US weapons or platforms in the Pakistan inventory are essentially useless - Pakistan is essentially paying a rent to own them and maintain them, without the option of exercising control over where and when it may use these weapons in the eventuality of hostilities .
Once it was articulated that our only options were F16 and when some refused to accept that, we created JFT with the Chinese -- Chinese too have some experience with maritime patrol and perhaps Pakistan can benefit from a consortium that includes China, Brazil and Russian expertise in these fields -- We don't have a choice other than ditching the US, she is poison and a threat to Pakistan, as Pakistan is presently constituted.
JFT took off as a project pretty fast, though the Super 7 projected suffered from both the constraints of will and resources - It's absolutely essential that Pakistanis technicians and engineers institutionalize as much technical know how as they can amalgamate from these platforms they presently employ and plan for joint research and production projects with reliable partners.
The PN may want to use it's present inventory and not purchase any US platform for a 7 to 10 year period in which it's joint effort with partners, results in effective platform(s)