What completed modernizations change in 1941

How would the Second World War change if planned pre-war battleship modernizations had been completed?

Britain would have more capable capital ships available, improving fire control, protection, air defence, and flexibility in key 1941 deployments.

A fully modernized Queen Elizabeth class would give the Royal Navy five credible frontline ships for the Mediterranean and other theatres. Better fire control, protection, and anti-aircraft capability would change how they were deployed and how much risk commanders accepted. Barham's improved underwater protection might prevent her historical loss, while a modernized Repulse could share fast-capital-ship duties with Hood and Renown. The Indian Ocean Fleet might receive two modernized Queen Elizabeths instead of relying on Warspite alone. The cumulative effect is a more resilient fleet with more operational options, rather than one guaranteed decisive battle.