Some amateur attempt at analyzing raw numbers is pointless, it only serves the needs of the merchants of doubt, or the fear mongers. Every country, including China, has publicly recognized that the numbers given are not a complete count. Every expert has said that the actual numbers are many times higher than the data captured.
The people diagnosed are only a sample of the whole population. No sample is ever perfect, or fully represents the situation.
As knowledge increases it will be seen that people have been missed out of sample data, but by constantly changing what is being included in the sample will blur the data and make seeing the trend much more difficult. If you keep putting things into/out of the raw data, it will not be possible to easily see if the curve is being flattened, i.e. are the measures taken having an effect.
Fear not the new data will be input to the epidemiological models, and these models will more complex than I am able to comprehend. I have see no need to explore them.