Why an HMS Hood refit could not simply add mixed mounts

What would be the advantages and disadvantages of a mixed mount layout in a wartime HMS Hood refit?

The mixed scheme was impractical because the proposed mounts, structural loads, internal arrangements, and available deck space did not align.

The suggested mixture of twin mounts runs into both physical-space limits and the absence of a completed upper-deck mounting during the war. The answer emphasizes that refitting a capital ship required extensive design studies, structural work, magazine changes, and production capacity rather than merely placing a new weapon wherever deck space appeared available. Comparisons with Renown and Queen Elizabeth show how dramatically a successful reconstruction could alter a ship while still being constrained by the original hull. Warspite's poor condition justified unusually extensive work and helped establish a precedent later invoked for the reconstruction of Victorious.