A steady nuclear-escort production policy

Could periodic nuclear versions of escort classes avoid block obsolescence better than a dedicated nuclear cruiser class?

Yes; a continuing policy could carry new systems into each generation rather than leaving a small, separate class to age together.

The question suggests building occasional nuclear versions within successive escort classes rather than creating a separate nuclear-cruiser class in one short run. The answer endorses the logic of continuity through a policy such as making every eighth or tenth escort nuclear-powered. A slow, persistent production rate would preserve industrial and operational experience without bringing the whole force into service at once. Spreading nuclear ships across production generations could also keep their combat systems current and avoid concentrating an entire nuclear escort force in one ageing design.