Most ScriptableRendererFeatures don't have a public API. For instance, there's no way to control the parameters of the ScreenSpaceAmbientOcclusion SRF through a public API. In one project, I needed to tweak SSAO with different parameters across the level, but the only workaround was to use reflection code that caused per-frame memory allocations. Another example? It'd be great to control the maximum draw distance of the Decal SRF. Typically, PC games let users modify their settings to suit their hardware. When implementing a ScriptableRendererFeature, it would be awesome if its parameters were exposed through a public API.