A third Dido-class run with Vanguard's improved 5.25-inch guns

How effective would a third run of Dido-class cruisers be with Vanguard's improved 5.25-inch guns?

They would be useful air-defense ships, with their value rising sharply if an invasion of Japan extended the war and produced much heavier kamikaze losses.

Another group of Dido-like cruisers with Vanguard's improved 5.25-inch guns would be useful to the Royal Navy. An alternative possibility is a similar cruiser with automatic six-inch guns, particularly if an invasion of Japan created an urgent need for replacements. The British Pacific Fleet had already experienced kamikaze attacks at Okinawa, so the main change would be the scale of the attacks, damage, and losses. Those losses could make the need for new ships more apparent to politicians who otherwise saw an existing, heavily used cruiser fleet. A war extended by another year or eighteen months could also carry the Audacious- and Malta-class carrier programmes further forward. Even carriers that survived attacks might be damaged badly enough to require replacement during continued operations.