What is the problem or goal you're trying to solve or accomplish?
Users need to see contextual detail about a data mark without leaving the current view. Hovering over a mark should be able to display a dynamically filtered mini-chart inline. Currently, tooltips only show metric values and dimension labels.
How are you solving it currently?
Workarounds include Drill to Detail (requires a click, opens a table modal) and a companion chart driven by cross-filter (requires a click, permanently occupies dashboard space). Neither replicates a hover-triggered inline chart experience.
What is your recommended solution?
Allow dashboard authors to configure a chart to appear inside the tooltip of another chart, filtered dynamically by the hovered mark's context.