If you have multiple axes shown on a chart it can be hard to determine which axis relates to a particular data point. 

Currently you can use color to visually tie them together (see http://demos.kendoui.com/dataviz/bar-charts/multiple-axes.html) but this isn't a great solution.

What would be nice is an option to highlight the appropriate axis when you hover over a data series point (similar to the new feature where data series is highlighted when you hover over the legend)