Why an 'unmodernized' County cruiser could still be useful

With forty County-class cruisers in service, how useful would the ships without major reconstructions be?

Still very useful if their engines, fire control, and other systems were kept current; a full structural rebuild was beneficial but not essential.

The answer distinguishes a complete structural rebuild from the continuing maintenance and equipment upgrades that keep a ship combat-ready. New armor or a rebuilt superstructure is helpful, but functioning engines and modern fire-control systems matter more to everyday wartime usefulness. The answer cautions against treating ships without a headline reconstruction as frozen in their original condition.