The root cause field of a service shows the trigger names that caused the service to degrade. The issue is that the service name itself may not always give enough context:

It just repeats "Host unreachable" 3 times, and you have to click through to find out what the hosts are.

Including the host name in the trigger name itself is redundant, since almost everywhere else where triggers are shown, the host name is shown as well.

Including the host name, or adding an option to include it could improve the "root cause" overview.