Any way to include 'direct entry' in the graph of External Website Referrers widget?

The external website referrers widget graph is very useful, however, I’d love to have the option to include ‘direct entry’ on the graph as well to be able to compare things like top referrer versus direct entry (e.g. how well is an external advertising campaign where users type in the address and don’t have a referrer doing compared to a linked advertising campaign where users click on a link and have a referrer).

Thanks,
Aaron