Why later British cruisers moved away from an older look

Why did some 1920s British cruisers look archaic, and why was the unit system not retained?

The unit system was judged less survivable than expected, while later cruiser design increasingly followed Enterprise rather than the older County-class visual and conceptual model.

The British did not find the unit system as survivable as hoped. HMS Enterprise also looks markedly different from the more retrospective County class. Later light cruisers developed the Enterprise direction instead of preserving the older arrangement. Senior designers rooted in battleship thinking may have struggled to understand why the experimental cruiser choices had been made.