Updated metadata, added Product Strategy Canvas, Startup Canvas, Value Proposition Template

pm-product-strategy/skills/lean-canvas/SKILL.md

@@ -94,7 +94,18 @@ Your task is to create a comprehensive Lean Canvas that outlines the business hy
 
 ### Domain Context
 
-Lean Canvas mixes strategy and business model into one artifact. **Startup Canvas** separates them: 9 strategy sections (from the Product Strategy Canvas) + Cost Structure & Revenue Streams. Consider which structure best fits the user's needs.
+**Lean Canvas vs Business Model Canvas vs Startup Canvas**:
+
+Lean Canvas (Ash Maurya) is a startup-focused adaptation of the Business Model Canvas that replaces Partners/Activities/Resources with Problem/Solution/Unfair Advantage. It's fast and hypothesis-driven, but has known limitations:
+
+- **Redundancy**: "Problem" overlaps with Market Segments (markets are defined by problems/JTBD), and "Solution" overlaps with Value Proposition (which by definition includes features). This can create confusion about what goes where.
+- **Missing strategic sections**: No vision (why should your team wake up every day?), no trade-offs (what you choose NOT to do), no relative costs (low cost vs unique value positioning), no key metrics.
+- **Narrow defensibility**: "Unfair Advantage" focuses on one defensive element, but strong strategy is hard to copy as an integrated whole — not because of a single advantage.
+- **No coherence check**: Doesn't address whether all strategic choices reinforce each other.
+
+**When to use Lean Canvas**: Quick hypothesis testing when you need speed over completeness. Best as a brainstorming tool, not a strategy document.
+
+**Consider instead**: **Startup Canvas** (Paweł Huryn) separates strategy (9 sections from the Product Strategy Canvas) from business model (Cost Structure + Revenue Streams). Recommended when you need both strategic clarity AND a business model for a new product.
 
 ## Notes
 - The Lean Canvas is designed for rapid hypothesis testing