You have mentioned mostly all features, I would like to suggest one more, there should be a decentralized approach to store data to deflect the privacy concerns. https://www.spaceo.ca/government-contact-tracing-app-covid-19/
You have mentioned mostly all features, I would like to suggest one more, there should be a decentralized approach to store data to deflect the privacy concerns. https://www.spaceo.ca/government-contact-tracing-app-covid-19/