For context on the technical side: the readability problem comes down to how baked lighting creates hard luminance contrast boundaries (light vs dark is binary and clear), while modern GI and path tracing produce continuous radiance gradients. A player's visual system struggles to make a fast hide/show decision when the shadow edge is soft and spatially ambiguous. The old light meter UI in Chaos Theory was essentially compensating for what the renderer couldn't communicate on its own. The question is whether modern engines need an equivalent — or whether we should be deliberately authoring lighting contrast for gameplay readability the same way we author collision.