Conciseness

The body is dense with expert-attributed specifics (sample sizes, question scripts, stop rules) and never explains basics Claude already knows, so it clears level 3. It is not a 5 because the 'Receipts' section inlines long quotes that already live in references/quotes.md (e.g. the Moesta 00:12:34, Torres 39:57 and Todd Jackson 01:18:06 quotes appear in both), a trimmable duplication.

Actionability

Guidance is fully executable for an instruction-only skill: verbatim prompts ('Tell me about the last time you [bought / switched / tried to do X]'), numeric recruiting/sample rules ('10 to 12 per round', 'stop when you can predict 70 to 80 percent of the next answer'), a fenced paste-ready deliverable template, and a 1/3/5 grading rubric covering common cases.

Workflow Clarity

A clear Step 1 Diagnose -> Step 2 Pick the play -> Step 3 Run it (A/B/C) sequence with routing gates ('No decision means do not run it') and feedback loops ('Predictions vs actual: what surprised us', say-do checks) — above level 3's implicit checkpoints. It falls short of 5 only because there is no explicit step validating the skill's own produced deliverable before hand-off; the 'Grade existing work' rubric is framed for user-supplied work, not self-check.

Progressive Disclosure

Clear sections with well-signaled, one-level-deep references that are real files ('references/frameworks.md — every framework in this skill, how to run it', 'references/quotes.md — verified quotes with timestamps'), matching level 4's 'mostly clear, minor gaps'. Not level 5: the receipts/quotes duplication between body and reference file, and sizable inline blocks (the grading table, red flags) that could be split out, show content is not cleanly 'appropriately split'.

Specificity

The description lists multiple concrete actions with comprehensive output coverage: 'Designs customer interviews and turns the transcripts into decisions. Produces an interview guide plus a synthesis (forces of progress, jobs, pathways, opportunities) you can paste into a doc.' This matches the level-5 anchor (multiple specific concrete actions, comprehensive coverage), not level 4, since no capability of the skill is left unnamed.

Completeness

Both questions are answered explicitly: what — 'Designs customer interviews and turns the transcripts into decisions. Produces an interview guide plus a synthesis…' and when — 'Use for 'customer interviews', 'discovery calls', 'JTBD'…' with concrete trigger phrases. This matches the level-5 anchor exactly; level 4 would require the 'when' to be less explicit.

Trigger Term Quality

Trigger list is strong and phrased as natural user language ('customer interviews', 'discovery calls', 'JTBD', 'switch interview', 'who should I talk to', 'how many interviews', 'synthesize these transcripts', 'why do customers churn/buy'), but a few common variations are missing — notably 'user interviews', 'customer research', and 'discovery interview'. Good coverage with a few natural terms absent matches level 4, not level 5's comprehensive synonym coverage.

Distinctiveness Conflict Risk

A clear niche (customer discovery interviewing / JTBD synthesis) with distinct triggers like 'switch interview', 'JTBD', and 'synthesize these transcripts' that no generic research or analytics skill would claim, matching level 5's minimal conflict risk. It sits above level 4 because even adjacent skills (validate-idea, prioritize, price) are disambiguated by the interview-specific framing.