Enable system identifier for notifications

Please enable an ‘identifier’ to identify the Homeasistant instance sending notifications.

In the current system (i am on Hassos/Hassio -75.3) there is (i believe) no other way than editing the message and title manually for each notification.

Use case;
2 systems, 1 Hassos and 1 Hassio, now both showing as ‘Homeassistant’ in all notifying platforms. Naming these instances differently, shows in the frontend, but not in the messaging, no matter which platform.

Request: to implement a system identifier, and have it show up in notifications.

simply using the

homeassistant: 
  name: 'identifier'

as identifier would be perfect.