There is a LOT of documentation but all of the functionality isn't really useful. I think that some of the commands could be run and tied to widgets to display useful information from rT.
I still refer to it as pyroscope but it's pyrocore for the utilities (rtcontrol is how I manage ratios to not overseed or to remove torrents after X hours/days) and rTorrent-PS to beautify the rTorrent interface. Sometimes I like using the actual interface and rT-PS makes it easier to look at. Both pyrocore and rt-PS would be great additions to this project.
If you want to talk to the developer, pyroscope, he hangs out on freenode in ##rtorrent.