Dominion battlecruisers could sustain British fast-capital-ship building

Could retained battlecruisers in Australian and New Zealand service lead to useful modern replacements?

Yes; their mid-1930s replacement could support a larger British-built class of fast battleships, potentially based on the F3 design.

The old ships would be placeholders for a later replacement cycle. Australia and New Zealand could order successors from British yards in the mid-1930s, helping to sustain fast-capital-ship construction. A six-ship programme replacing four Dominion battlecruisers and two Royal Navy ships might favor the faster F3 concept over the Nelson design. The result would be genuine fast battleships with sixteen-inch guns, a combination that would affect Japanese planning.