Congratulations.
I believe the 'centre case' is the mortality data from the Diamond Princess and from Germany: in Germany there are 5,813 infected patients, with 13 dead and 2 in critical condition - that's a mortality rate if both critical patients succumb of 0.25% - comparable to a flu season.
(Italy is so high primarily because I think the true number of infected is hundreds of thousands of people - so the 1,800 deaths and 1,600 critical patients, if we back-calculate with a 0.25% mortality rate gives an infected population size of about a million people.)
If this is true, and the virus spreads unstoppable, it might in the end be declared a relatively mild 'flu'.
The Chinese and South Korean data also seems to support this - although they are showing higher, 0.9% mortality rate, but there might still be significant under-reporting there.