Conciseness

The body is dense with signal — benchmark tables, sizing rules, and checklists — with only minor trimmable padding (the persona intro paragraph, asides like "Timing is everything" and "Delayed rewards break the loop"). It is not a 5 because of that padding, and not a 3 because no section is merely explanatory rather than instructional.

Actionability

For an instruction-only skill, the guidance is copy-paste usable: concrete sizing rules ("Reward should be ≥10% of first month's value... cap at 30% of first payment"), benchmark thresholds per metric, a tiered reward example, an executable script ("Run `scripts/referral_roi_calculator.py`"), and a launch checklist. Specific examples cover the common cases, matching the top anchor.

Workflow Clarity

Three modes each carry a numbered workflow, and checkpoints exist ("Measure the impact before moving to the next lever", the pre-launch checklists), but there are no explicit validate→fix→retry feedback loops. Not 5 because error-recovery loops are absent; not 3 because sequences are explicit and checkpoints are present.

Progressive Disclosure

References to references/measurement-framework.md and references/program-mechanics.md (both verified to exist) are well-signaled at point of need and one level deep, with the script correctly linked. Not 5 because at ~275 lines the body inlines detail (e.g., the full affiliate launch checklist, tiered reward examples) that could be partly deferred; not 3 because structure and signaling are genuinely good.

Specificity

"design, launch, or optimize a referral or affiliate program" plus "Covers program mechanics, incentive design, and optimization" lists several concrete actions with minor gaps in coverage. It falls short of a 5 because the enumerated action list is moderate, and above a 3 because it goes well beyond naming 1-2 actions.

Completeness

It explicitly answers both 'what' (design, launch, or optimize referral/affiliate programs; mechanics, incentive design, optimization) and 'when' ("Use when they mention..." with ten concrete trigger phrases). This mirrors the anchor-5 example structure exactly; a 4 would require a less explicit 'when' clause.

Trigger Term Quality

"'referral program,' 'affiliate program,' 'word of mouth,' 'refer a friend,' 'incentive program,' 'customer referrals,' 'brand ambassador,' 'partner program,' 'referral link,' or 'growth through referrals'" is comprehensive natural phrasing with synonyms users would actually say. It matches the top anchor; nothing is missing.

Distinctiveness Conflict Risk

A clear referral/affiliate niche with distinct triggers makes conflict unlikely, but broad terms like "incentive program" and "partner program" create minor overlap risk with adjacent growth-marketing skills. Not 5 because the overlap is more than minimal; not 3 because the core triggers are tightly scoped.