I suggest to add to Dashboard page of all non-super-admin users a clear, simple indication, whether the Zabbix server is running or not. See the attached screenshot for an example design, where the status description, server hostname and queue lenght is displayed. If the server is not running, the respective table field blinks to attract attention of the user.

The motivation for my suggestion is the fact, that the Zabbix Supper Admin does not eye the Zabbix GUI all the time whilst the 24x7 operators do. There is however no indication for them that the Zabbix server is not running, i.e. they do not know that the monitoring does not work if the Zabbix frontend is still available.

In addition, I suggest to add an option to sort the "Latest issues" in Dashboard by severity first and by time second. It is important to have the description of most severe issues displayed on the big monitor on the wall at the Service Center room ....