It'd be great if Rickshaw had a Geo Chart to plot data on the globe. For instance i'd like to visualize on the map most popular sources of traffic, performance of the website across the globe etc.
A map of the US would be a plus! :D (something like this http://mbostock.github.com/d3/talk/20111018/choropleth.html)
Good idea, but outside the scope of this library. D3 is already pretty alright at that, so I'd look there.