How would Japan change the Kii and Number 13 designs if it revived them in the 1930s?
Short answerThe main changes would follow newer technology and experience, because the strategic emphasis on attrition followed by decisive battle remained similar.
NotesThe hypothetical revival is framed around Japan's continuing big-gun and decisive-battle priorities. Technological progress and lessons absorbed after the First World War would drive substantial redesign. Kii could emerge as a very different class, while the Number 13 concept is thought potentially closer to the later requirement. No detailed revised specifications are supplied. Escort development is mentioned as an exception to the broader claim of doctrinal continuity.