To add a bit more, it wold be awesome if we could have events go to multiple services. More and more apps and services are built with micro-service architecture and as such there are more and more shared services being implemented. Shared services are usually used by more than 1 teams and it would be nice to notify multiple teams when a shared service is having issues.
Maybe something like, service 1 being the main service that gets the actual critical incident but other services only get low severity so they are aware at the time of creation.
A good example would be SSL Certs, there would be a team that manages the purchasing and renewal and the security team and networking team would need to apply the cert in different places. With this feature, you could create the main incident for the purchasing team and add a low priority incident to the security and networking team that would open a JIRA ticket to let them know they need to plan for working on a cert update.