User feedback
 
Visual labels are now visible with further customization but for clarity, they should be switched on by default. Or at least when creating a widget, give the opportunity to display or not the labels/legend of X and Y axes. It will help understand the widget content at first sight instead of requiring mouse-over or interpretation

 
Labels: from my use of analytics, I'd think that I want to see the number of my metrics (e.g. 28 new users) immediately on the chart rather than having to mouse-over it to see the precise analytics

• Commonly Used --> Green tooltip: we will show the label for the Y 
• Custom supplier -->