What might an Italian equivalent to the Dido or Atlanta classes look like?
Short answerThe Capitani Romani is a near-equivalent, while a larger Abruzzi-type light cruiser could carry ten 5.3-inch guns and a strong 4-inch anti-aircraft battery.
NotesHull volume and an existing light-cruiser battery provide the starting constraints. A larger Italian light cruiser could carry multiple twin 5.3-inch mounts while retaining a strong secondary anti-aircraft fit.