We need to be able to label specific data points with dynamically generated values (including text). Use cases include:
* Labeling the first or last point of line charts with values
* Labeling the last point of series in a line chart with the series name, to directly inform the user which series is which, rather than have them constantly move their eyes between a legend and the many series on a graph.
* Labeling particular values of interest, to aid storytelling.
These things are bulk-standard features of good dashboard design, and are essential in order to design optimal user-friendly dashboards with low cognitive burden.
Gotta say that humble ol' Excel is streets ahead of Power BI in regards to data labeling.
Note that measure-driven tooltips are NOT a substitute for this feature. We need ways to draw the users' attention to particular points or features without relying on mouse-over.
Dirk Boehm commented
Good idea. I‘d like to add Maximum and Minimum to the list of line chart data points that need to be labeled by measure driven labels