The Washington Treaty's carrier limits

How would World War II change if the Washington Treaty focused on carrier displacement?

Carrier displacement was already limited, so the intended change needs clarification.

Aircraft-carrier displacement already formed part of the treaty. A 27,000-ton individual limit and a cumulative figure of 135,000 tons are cited. The intended counterfactual therefore needs a more specific change to the existing limits. No alternative wartime outcome is developed.