Not an issue, just wanted to contribute in some way to this wonderful effort.

I tried to emulate the New York Times COVID-19 tracking graphs as close as possible and I think I came quite close. I should be done with this in a couple of weeks.
Have a look -

• Indian States Cases - Layered Facet Chart, bars are actual numbers and area and line are averages of 5 days.
• Averaged Growth Rates, Cumulative Cases per country - Layered Facet for Cumulative Cases.

Will try GIS mapping soon too. Need to figure out how to use shape files etc.

Perhaps once everything is done, you will accept a PR for a case study ?