Conciseness

The ~45-line body is dense and operational throughout — "Parallelism buys fresh context per unit and speed. It costs coordination..." — with no padding and no explanation of concepts Claude already knows; every section adds non-obvious guidance (preconditions, caps, maker/checker separation).

Actionability

Guidance is specific and executable — "Set the cap before the first iteration (default 5). At the cap, report PARTIAL with what remains", "Route review to a different agent... with the success criteria and the artifact path", "one dispatch per unchecked item, each told to tick its own line on DONE" — but the actual dispatch mechanics and any example unit/merge prompt are delegated to the pointer files rather than shown inline.

Workflow Clarity

Each shape carries a clear sequence with explicit checkpoints — stop conditions ("no new findings, zero errors in the gate output, no unchecked items remain"), pre-fan-out caps, and PARTIAL/BLOCKED reporting on cap hit; maker/checker and review dispatches validate batch fan-outs. The gap: no stated handling for a unit dispatch that fails or errors mid-fan-out, so error recovery is only partially covered.

Progressive Disclosure

The body is under 50 lines with well-organized sections and no inline content that belongs in a separate file; its external references (the delegate SKILL.md and harness-notes) are one level deep and clearly signaled both inline in Preconditions and in a dedicated Pointers section.

Specificity

The description enumerates six concrete capability shapes — "fan-out with a barrier, maker/checker, generate-and-filter, tournaments for ranking, hypothesis fan-out for root cause, and loops that stop on a condition with a cap" — giving comprehensive, specific coverage rather than generic claims.

Completeness

It explicitly answers both questions: the opening sentence states what the skill does (orchestration shapes for many sub-agents), the "Use when..." clause gives six concrete triggers, and it adds a negative boundary ("Does not apply when units depend on each other's results or the cause is still unknown").

Trigger Term Quality

Natural trigger phrases are present ("too large or too repetitive for one window", "the same edit applies across many files", "ranking or judging a large set", "root cause"), but the most natural user phrasings for this skill — "in parallel", "concurrently", "speed up" — never appear.

Distinctiveness Conflict Risk

A clear niche (parallel orchestration shapes) with distinct triggers and an explicit exclusion clause that prevents triggering for sequential or investigative work; only minor conceptual overlap with the sibling delegate skill.