IMO, keeping in view the budget constrains & recent shopping spree, PN should opt lease options on soft loan basis & eye on PLAN old DDGs;Tbh, the whole "destroyer" classification is kinda irrelevant. I.e the Chinese call the 055 a destroyer but the Us call it a cruiser. If the PN wanted a heavier tonnage vessel, we are talking 6000t+, we should be looking for something with the ability to handle saturation attacks effectively, surplus/used 052ds are ideal and an export variant of them could be on the cards, if not, Italian FREMMs however, while swapping Aster 15 for CAMM-ER, Aster 15 is an awful choice in light of camm. 8 or 16 cells dedicated to quadpacked CAMM-ER and then the rest to ASTER-30. However, another option is an Ada based heavier tonnage ship(i have discussed this in a quwa article: https://quwa.org/2020/09/06/analysis-ideas-on-how-pakistan-can-leverage-the-milgem-ada-2/ )
If all else fails, the TF2000 AAW frigate/destroyer will always be an option. In fact, we have seen Turkish efforts to market it abroad already. Damen also has the omega frigate on offer- something we can also consider. At the end of the day, id prefer the PN tried to design their own hull and then intergrated COTS components onto the ship, allowing for them to gain vital design experience which can be used with maximum indigenous components down the line.
02 - 52B (Currently under upgradation phase)
01 - 51B (Recently upgraded)
02 - 51C (yet to be upgraded)
04 - SOUVs (1 upgraded, 1 is currently under upgradation phase, remaining 2 will be in next phase).
There are rumors circling around in PN quarters quite a while now (since few years) for having few DDGs from above mentioned list but don't know the current status....