Will the cruiser classification disappear in favour of destroyers?
Short answerIt largely already has: cruiser-sized roles remain, but political and historical associations encourage navies to call the ships destroyers.
NotesThe cruiser classification has already receded even though cruiser-sized surface combatants remain. Part of the naming change is linked to the historical association between cruisers and imperial presence. Navies still require long-range, heavily armed command and escort ships, so destroyers have grown to absorb those missions. The label has changed more decisively than the operational need.