Adapting a 1942 light fleet carrier for the Cold War

What change would best adapt a 1942 light fleet carrier design for Cold War service?

Add roughly ten meters of length to create more room for later aircraft operations and equipment.

Carrier modernization is constrained by deck length and internal volume. Lengthening is the simplest high-leverage change before considering weapons or electronics. Postwar aircraft imposed greater demands on takeoff space, landing arrangements, workshops, fuel, and stores. An extra ten meters would not solve every Cold War problem, but it would provide margin for later conversions.