Why moving the G3 bridge aft complicated ship control

Why not rearrange the G3 superstructure and citadel to save more weight?

Because moving the bridge too far aft would make ship control less satisfactory despite the structural savings.

Reversing major parts of the G3 citadel and superstructure could save weight, but it pushed the ship-control position farther from the bow. British carrier islands were also placed farther forward than their American counterparts. British designers prioritized conning and navigating the ship, while American practice gave relatively more weight to aircraft control. A rearrangement that works in a weight diagram can create a human and operational penalty on the bridge.