The ability to annotate a visualization, for example a chart or graph, would make both the dashboard and reports experience more robust.
Grafana has good annotation support. We would love something similar in Power BI. To be clear, by annotations I am referring to adding time markers or time ranges (start + end timestamp) overlaid on visualizations having time on the x axis. These time markers include text that explain what happened at that moment in time. In Grafana these are persistent vertical lines (with translucency between lines for ranges) that can selectively toggled. Clicking on an annotation marker displays a small popup with a specific timestamp, a title, and a description. Crucially, these can be populated by queries of event data. Something similar in Power BI beyond tooltips would be of great use. https://grafana.com/docs/reference/annotations/
