Please go ahead, that would be great. The output of this script: https://github.com/certik/slabikar-otf/blob/dce9fc9e575f7d6e... creates a single line SVG. The other scripts then feed it to Inkscape and read it back as outline, so you would skip this step. You can then use this script: https://github.com/certik/slabikar-otf/blob/dce9fc9e575f7d6e... to convert to glif and the rest of the pipeline to build the font. I think I implemented single line fonts in glif.py, but if not, it shouldn't be hard to implement. If you are interested in collaborating on this, please let me know, we can add it as another job at the CI to test this mode.

Do you have a plotter? Send some videos and photos once you get it working!