All five Hawkins are being finished - four as 7.5" cruisers, plus what will be the many guises of Cavendish (note she won't be renamed Vindictive, as that ship never won her many OTL glories).On a slightly different track, did the later Hawkins-class cruisers get finished, or were the ones after Cavendish cancelled when the war ended early?
Although they ended up setting the standard for OTL's "Treaty" heavy cruisers, the RN never seemed to be happy with the design and they spent half the inter-war years converting and re-converting and generally messing around with them. If Hawkins is a one-off it might affect any inter-war lmits on cruiser design.
If they're planning for Vindictive to mount cruiser armament as well as a significant air group on 10,000 tons, the Admiralty have some bad news coming. Worst case, they end up with something like a 1920s Tone - a cut-down CA that carries half-a-dozen float planes. Not bad if all you want to do is scout, but not a carrier or even a path to one.
They have to learn what is an what isn't a carrier sometime...
No, I agree they weren't very good, too much of a transitional design - but they were what was available, and at the time, the RN desperately needed big cruisers, as all the armoured cruisers were hopelessly out of date (much the same situation applies in the story).