Forty-eight heavy cruisers would marginalize light cruisers

If Britain obtained forty-eight heavy cruisers, would it abandon light cruisers?

It would still build lighter cruisers, but probably as a continuum beneath the heavy force rather than through the same historical categories and classes.

Britain would still build cruisers for lighter duties, although those ships would likely be conceived as smaller or less heavily armed members of a cruiser spectrum. With so many heavy cruisers available, the treaty-era distinction and historical County-class pathway would lose much of its force-structure purpose.