Better guns cannot fix Crete or Malaya by themselves

Would a dual-purpose 4.7-inch gun prevent the falls of Crete or Malaya?

No. It could reduce naval losses, but it could not repair the ground-command, staffing, and logistics failures that determined those campaigns.

Higher-angle guns might save ships during the evacuation of Crete, but they do not correct the campaign's confused command structure. The same distinction applies in Malaya, where the strongest British officers were concentrated in home defence, North Africa, and the Middle East. The Far Eastern command therefore lacked enough experienced senior staff for the crisis it faced. Ground decisions and logistics would still determine whether either campaign changed.