I'll be upgrading the LastGraph renderer today, which will involve some render node downtime (I'll attempt to keep the main site up, however).
I plan to separate the downloading, processing and rendering stages, so I can easily add more nodes (the rendering stage requires Inkscape, so can only be performed on computers with it installed as LastGraph expects), as well as adding in some decent colouring - the current graphs are looking worse with all the little lines removed.
I'll post again with status updates once I've gotten somewhere!