The mention of '6 ships of larger tonnage' came right after the Yarmouk-Class OPVs. So, it appears that the PN is talking to Damen for 6 larger OPVs. Obviously, I can't say for sure (I can easily be wrong here), but if we factor in our tighter finances, lack of credit options from the West, etc, more OPVs seems likely.
Now, there is one
possible middle road, the Damen Crossover series. This is basically a hybrid design that uses both commercial and naval build standards (to keep costs low), but offers a lot of capabilities. Yes, it can do long-range AAW, but also some amphibious support operations, AShW/ASW, logistics, HDAR, etc.
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Basically, instead of having very large OPVs, we can move to building a 'second fleet' around modular ships (e.g. the Crossover). Several navies are considering this approach, but Singapore is moving towards it -- i.e., maintain a 'traditional' naval force of frigates and submarines, but configure their patrol/policing through a large modular design networked with USVs and UAVs.
In terms of long-range AAW, I think we'll likely work to configure the Jinnah-class with a long-range SAM -- e.g., Aster 30 or Turkey's SIPER. Do remember, we had MBDA Italy's CEO visit the last CNS in 2019.