Status: OUT
Decorator's distinct compositional niche as the composition-based responsibility-augmentation pattern, within an extension spectrum that converges on composition, is reliable only while Decorator's identity-breaking transparent wrapping does not conflict with client assumptions — identity-sensitive code requiring object == comparison across decoration boundaries may need alternative extension strategies (Strategy or Template Method).
Decorator's identity breakage gates its niche reliability — composition convergence breaks down where identity semantics matter
Depends on (SL): decorator-distinct-compositional-niche, extension-spectrum-converges-on-composition
Unless: decorator-breaks-object-identity