Would it be feasible to add toolpath generation to BRLCAD? Is anyone (interested in) working on this?
Entirely feasible but rather non-trivial to implement. Given our current resources and priorities, I don't see any of the current devs picking the task up, but I'd be more than willing to help you get started if you're interested in working on it.
This is a rather old thread, but I just went through an exercise studying how to generate tool paths from CAD drawings. The easiest way to do this is to convert your brlcad object to *.stl, then use the Open Source pyCAM http://pycam.sourceforge.net/
I put together a report describing this and some other options that can be downloaded from here: