How would 28-knot Queen Elizabeths change later battleships?

How would genuine 28- to 30-knot Queen Elizabeths in the First World War affect capital-ship development by the Second World War?

They would likely establish the fast battleship as the normal successor to the dreadnought much earlier, making 21-knot capital ships less attractive.

A 28-knot class entering service around 1914 would create a practical benchmark rather than an isolated experimental claim. Later navies would have to consider whether a slow battle line could still force or escape combat against such ships. In this periodization, the dreadnought era ends and the fast-battleship era begins with Queen Elizabeth. A propulsion choice in one class could redirect the design assumptions inherited by interwar and Second World War fleets.