Images in ToolTip

Is it possible to show an image when rolling over a dataset?

Basically I have my chart showing data (impressions) by creative. I want to be able to rollover the creative name on the axis and have it show an image of the creative vs. just having the name there. Or I'd even like to have it show the image in the tooltip along with the other data that I've placed there.

Is this something that is possible or something you can add in to your roadmap?

Thanks,

Jamie