Why N3 inherited an awkward midships turret

Would N3 retain G3's midships turret arrangement, and why was it chosen?

The layout was an efficient engineering compromise, though a completed development might have shifted the turret forward toward a Nelson-like arrangement.

The midships location is efficient from an engineering perspective even though its firing arrangement is awkward. Concentrating protected spaces and machinery can reduce weight and citadel length. Continued design work might have moved the battery forward into a layout closer to Nelson and Rodney. Internal design efficiency can conflict with the gun arcs and handling qualities sailors would prefer.