Above all the Navy needs an effective, easy to launch from any ship, manned anti drone aircraft to protect the surface fleet.
In the meantime, the events on Guam in 2019 serve as maybe the most outstanding reminder of how the Pentagon’s fixation on high-end threats, and the huge gold plated weapons programs that are put into play to counter them, have left even those very capabilities remarkably vulnerable to far less advanced attacks.”
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Drone swarm weapons are going to obsolete a lot of countermeasures.
I'm sure the Chinese & Russians have something similar. Add warhead small warhead targeting phased array antennae - or area denial agent, i.e. NBC - and voila: Warship neutralized.