Brilliant posts by
@Bilal Khan (Quwa) and
@syed_yusuf ! I think that a few 052C could be interesting, but would it stretch the budget too far? Would it be a bridge too far and lead to a Greece-like situation? That would be more damaging.
But definitely Syed, the 6 052C are like low hanging fruit and if China can be convinced for the sake of protecting the CPEC, this could be a major breakthrough. Except for the aircraft carrier, with all the other purchases, PN would be on par with IN after such a purchase.
I'd also go for 1000 ton corvettes to add numbers to the mix, like Syed suggested elsewhere, without helicopter but fitted for ASW / ASu / PDMS.
Here is a thought that occurred to me - taking commercial advantage of a tragedy in the making. If Iran is attacked, a long tanker war will start. Gulf oil will need to be protected: reviving the Sloop-of-War at about 400-600 ton range. Use a commercial design like a Damen Offshore Support Vessel and arm it with 302s, Turkish 76mm main gun, machine guns, CIWS. Because of the OSV lineage, would have good endurance (30 days) and serve an excellent mercenary role.