As a potential user of an emergency response Fediverse app, there's data I -- personally -- want to have.
1. Immediacy of updates
2. Map of where the crisis is happening
3. Charts and graphs that helps me understand current status
4. Ability to send updates to authorities
5. Ability to notify loved ones about how I'm doing
This is how I'd interact with the app, but devs will have to model out other potentialities and build!