Sixteen Commonwealth Unicorns transform the 1941 carrier balance

What changes if Canada and Australia each build eight modified Unicorn-class carriers from 1939?

The Allies gain sixteen light fleet carriers around 1941, and Britain is likely pushed to sustain its own carrier construction.

The scenario assumes both dominions begin eight modified Unicorns when war starts and keep construction moving. If those ships enter service around 1941, sixteen additional light fleet carriers become available to the Allied naval effort. Dominion commitment on that scale would also make it politically harder for Churchill to pause British carrier construction. The result would add flight decks overseas, sustain a larger British program, and provide far greater flexibility in distributing carrier air power.