What would a modern destroyer leader add to Type 45s?

A separate destroyer-leader category would require a role beyond the capabilities of today's ordinary destroyers. The closing thought experiment uses six Type 45s to consider two or three leaders and different groupings of ships. Their purpose would include the additional task-leadership work expected of a leader, but the question of their precise capabilities remains open. A later United States Navy example is offered as a continuation of enlarged destroyer design and hull form, preserving that lineage in another warship type.