Feedback Request - emit warning or error if lighting not finished generating

I develop an asset and I have some simple demo scenes with simple lighting, and would prefer to use the "Auto Generate" option rather than ship light maps.

Unfortunately i get bug reports that reflections look black because people press play immediately without waiting a few seconds for lighting to generate.

I thought it would be useful to emit an error or warning upon entering play mode if lighting is not generated which would alert many users that lighting hasn't finished generating.