One explanation for the historical separation is that Queen Elizabeths were already being produced as quickly as possible. Tiger and Queen Elizabeth were also considered as separate design projects. Combining their attributes would have required someone to pose that design question while accepting a change to the timetable. In the closing interpretation, the pressure to build quickly and the separation of the design discussions explain why that combination was never pursued.
Notable Point · 1:26:23-1:26:50
Why Tiger and Queen Elizabeth remained separate designs
Construction urgency and separate design discussions help explain why Tiger's hull was never combined with Queen Elizabeth's attributes.