Conciseness

The body is efficient, instruction-dense, and assumes Claude's competence without explaining basic concepts; minor repetition (the customer->value chain restated, the long Next Step Options list) could be trimmed.

Actionability

Highly concrete guidance for an instruction-only skill: explicit formula patterns ('users x tasks per period x time saved...'), exact query strings ('[customer] business case', 'ROI'), evidence labels (Known/Inferred/Assumed/Missing), and a copy-paste output template covering common cases.

Workflow Clarity

Five clearly sequenced workflow steps with decision checkpoints (bounded three-source pass, stop once core case is supported) and a Failure Handling feedback loop; minor validation gaps keep it just below a 5.

Progressive Disclosure

A dedicated 'Reference Loading' section signals exactly when to load each of four real one-level-deep references (input-and-output.md, workflow.md, value-model-and-evidence.md, output-and-presentation.md), all of which exist, with clear navigation and no nesting.

Specificity

Lists multiple concrete actions — 'Review commercial proposals and build customer-led business cases, ROI or value models, pricing or investment rationales, executive summaries, and customer-ready value stories' — with comprehensive coverage of the domain.

Completeness

The 'what' is explicit and detailed, but there is no 'Use when...' clause or equivalent trigger; 'tied to a customer, workflow, initiative, or decision' only weakly implies when, capping completeness at 3 per the missing-trigger guideline.

Trigger Term Quality

Strong natural keywords ('business cases', 'ROI', 'value models', 'pricing', 'executive summaries', 'value stories') that users would say, though a few synonyms (e.g. 'value proposition', 'TCO', 'business value') are absent.

Distinctiveness Conflict Risk

It carves a clear sales business-case niche that is mostly distinct from other skills, with only minor overlap risk against closely related sales/account skills.