Canadian and Australian Counties could multiply the imperial cruiser force

What changes if Canadian yards build eight County-class cruisers in the late 1920s?

Canada gains a major two-ocean fleet, Australia and Britain probably expand too, and imperial cruiser tonnage becomes large enough to reshape treaty negotiations.

The immediate payoff would be four Canadian cruisers available in each ocean and a much larger trained navy at the start of war. Australia would be unlikely to accept only two heavy cruisers if Canada built eight, so the scenario could produce eight ships for each dominion. Britain would probably expand its own force as well, possibly creating about forty-five imperial heavy cruisers once the Hawkins class is included. That scale would alter treaty arithmetic, strengthen Atlantic and Pacific reinforcement options, and reduce pressure to build very small light cruisers merely to reach the Royal Navy's desired hull count.