How to use spare Town-class cruisers in the Pacific

How should spare Town-class cruisers be deployed in the Pacific if German and Italian heavy ships are neutralized?

As merchant raiders and scouts intended to divide Japanese forces and create opportunities for Allied concentration.

The proposed employment is offensive rather than assigning every cruiser to convoy escort. Independent raiding and scouting groups would threaten Japanese communications across a wide maritime theatre. Their strategic purpose is to compel Japan to split forces in response. The Allies could then concentrate against those smaller detachments instead of meeting the entire Japanese fleet at once.