Conciseness

The no-implementation gate is repeated four times ("Do NOT invoke any implementation skill... until you have presented a design", the anti-pattern section, "The ONLY skill you invoke after brainstorming is writing-plans", and "Do NOT invoke any other skill"), and the Visual Companion section restates the browser-vs-terminal test with worked examples. Mostly efficient, but these padded/redundant passages could be trimmed — anchor 3 rather than 4's 'minor instances'.

Actionability

For an instruction-only skill the guidance is largely executable: an ordered 9-item checklist, an exact spec path (`docs/superpowers/specs/YYYY-MM-DD-<topic>-design.md`), verbatim messages for the companion offer and the user review gate, and a concrete 4-step self-review procedure. Minor gaps remain — the "invoke writing-plans skill" step depends on an external skill, and no example shows what a proposed approach or design section looks like.

Workflow Clarity

The 9-item checklist gives a clear ordered sequence, and validation checkpoints with feedback loops are explicit throughout: "get user approval after each section", the self-review fix-inline loop, and the user review gate with a 'changes requested' -> revise cycle — also visualized in the dot graph. This matches anchor 5 (explicit validation steps, feedback loops, checklists).

Progressive Disclosure

The body appropriately defers detail with a clearly signaled one-level reference ("read the detailed guide before proceeding: skills/brainstorming/visual-companion.md"), but that file is not present in the bundle (no references/ or skills/ directory exists), and none of the five scripts/ bundle files (server.cjs, helper.js, start-server.sh, etc.) are referenced or discoverable from the body. Structure is otherwise good, but the dangling reference and unlisted bundle content leave navigation incomplete — anchor 3.

Specificity

The description names the domain and a single concrete action ("Explores user intent, requirements and design before implementation"), but the list "creating features, building components, adding functionality, or modifying behavior" is trigger phrasing rather than capabilities. It matches anchor 3 (1-2 concrete actions, not comprehensive) rather than 4, which expects several distinct listed actions.

Completeness

Both parts are present: an explicit 'when' ("You MUST use this before any creative work - creating features, building components...") with concrete triggers, and a 'what' ("Explores user intent, requirements and design"). Not 5 because the 'what' is a single thin clause — the skill's actual outputs (designs, specs, approach trade-offs) are not described.

Trigger Term Quality

"creating features", "building components", "adding functionality", and "modifying behavior" are phrases users naturally say when requesting this skill. Common variations like "design", "implement", or "new feature" are missing, keeping it at anchor 4 rather than 5.

Distinctiveness Conflict Risk

The skill has a distinct niche (pre-implementation design exploration), but its triggers cover essentially all creative/building work, so it would fire alongside nearly every implementation-related skill. It sits between anchor 2's high overlap and anchor 4's minor overlap.