The most useful indicator on my dashboards is the version report gadget. In one graphic it shows all stakeholders the progress towards the committed features in the next version. It motivates developers as they can see the progress towards their medium term goals.
Today Jira Software Cloud is showing the message "The Version Report gadget will be retired soon on Dashboards. You can still access your Version Report by navigating to the Reports feature inside your Project."
Why is this very useful feature being retired? There is no similar gadget for epics, so that isn't an option. There is not even a gadget for providing links to reports, so I have to educate stakeholders on how to navigate to a project and its reports. This seems a big backward step for the usefulness of dashboards.