Conciseness

The body is table- and index-driven with no explanations of concepts Claude already knows, but it maintains five overlapping cross-indexes of the same 139 ideas (category table, by stage, by budget, by timeline, by use case) that could be consolidated. Matches anchor 4 (efficient with minor trims) rather than 5, since not every section earns its place, and well above 3's 'some unnecessary explanation'.

Actionability

Concrete guidance throughout: a specific output template ("Idea name / Why it fits / How to start / Expected outcome / Resources needed"), a numbered 4-step workflow, specific diagnostic questions, and actionable proactive triggers with redirects. It stops short of anchor 5 because there is no worked example applying the output template, and recommendations lean on idea numbers that resolve only in the reference file.

Workflow Clarity

A clear numbered sequence ("1. Ask about their product... 2. Suggest 3-5 most relevant ideas...") with a precondition check for .claude/product-marketing-context.md. It is not 5 because the key checkpoint — "If stage or budget is unclear, ask before recommending" — lives in the Communication section rather than being an explicit step with a decision point inside the workflow itself.

Progressive Disclosure

Exactly the anchor-5 pattern: a concise overview with quick indexes inline, and the bulk detail (all 139 idea descriptions) in a single clearly signaled, one-level-deep reference — "For the complete list with descriptions: See [references/ideas-by-category.md]", which exists as a real 347-line bundle file. No nested references, no buried content.

Specificity

The description names the domain and a concrete deliverable ("This skill provides 139 proven marketing approaches organized by category"), but lists no concrete actions such as curating, suggesting, or prioritizing ideas — those appear only in the body. It matches anchor 3 (domain plus 1-2 concrete statements, not comprehensive) rather than 4, which requires several specific actions, and is well above 2's minimal/generic bar.

Completeness

It explicitly answers both questions: "When the user needs marketing ideas... Also use when the user asks for..." (when) and "This skill provides 139 proven marketing approaches organized by category" (what), with concrete trigger phrases — an exact match to the anchor-5 exemplar.

Trigger Term Quality

Comprehensive natural-phrase coverage: "marketing ideas," "growth ideas," "how to market," "marketing strategies," "marketing tactics," "ways to promote," "ideas to grow" — these are exactly the phrases a user would say when needing this skill, matching the anchor-5 pattern of full synonym coverage.

Distinctiveness Conflict Risk

It carves a clear niche (marketing ideation for SaaS/software products) with distinct, idea-generation-oriented triggers; adjacent skills like content strategy or copywriting would trigger on materially different requests. Matches anchor 5 rather than 4, which requires only 'mostly distinct' separation.