The ILS was an imperfect example, but yes, considering this is a line of avionics suites we’ve abandoned. How far limped along was what the Viking had when it was put to pasture? The companies who had the expertise has long since dissolved their teams when the contracts stopped.
How expensive would it be to create a Growler ESM suite and from the ground up? You know as well as I do it’s not just buying some boxes and fitting antennas. That’s the level of sensor/hardware integration (radar, sonar, ESM, weapons) we’re talking about to match what we’ve already paid for in the Romeo. And that stuff is really good at what it does. And again, you’re overlooking how the 60R scales from ships that aren’t CATOBAR CVs or five thousand foot runways.
I realize I’m partially conflating the “could we” and “should we” do this, but they’re inexorably linked.