This post is not controversial. You are speaking a plain "truth".
The Sea Ceptor is an advance but it is not a CIWS and the Phalanx is not redundant. It is used by the USN, RN, RAN etc., and the RNZN ones are the Block 1B (upgraded) within last 10 years. It is a 20mm Gatling gun. I believe that with the advance of modern and faster ASM's, a heavier calibre CIWS is preferable, i.e., 30mm or 35mm, something like Goalkeeper or Rheinmetall's Millennium gun. My reasoning for this is that these quicker missiles have to be hit further out, especially the supersonic ones and with heavier rounds. Whilst modern SAM are good you always have to allow for the possibility of leakers, especially in a mass attack. However the pollies and Treasury would have a conniption because of the cost. With regard to SSMs I would avoid Harpoon because it is now obsolete and go for something like LRASM or NSM / JSM. I would definitely want SSMs on the ANZAC replacements as a matter of course.