Finish the Ikoma carriers before redesigning them

How would the Ikoma subgroup of the Unryū class be improved if Japan's wartime material position became better?

Complete the existing designs and provide their aircraft, since redesign would consume time and complicate construction.

The immediate priority is to finish the carriers already planned. Not all Unryū-class ships were completed, and none of the Ikoma subgroup entered service. Improved supplies would therefore be used to build the ships and their aircraft. Changing the design would introduce delays and complications when the aim is to get carriers into service.