Last year I created new YAML Workspace as I needed to quickly import STL files into FreeCAD for pre-fabrication check. I design a lot of parts that need to be cut from plywood with CO2 laser cutter. To avoid fixing errors in design I have python scripts that create STL files from my DXF designs. And YAML workspace allows me to easily import parts and check them in 3D space for correct fit.
Hopefully it makes more sense after looking at this short video:
In first part I manually import parts, move them, apply colour and transparency.
In last part of the video I use my YAML Workspace to automate the process.
So next time I fix something in my DXF files and recreate STL files. I can discard FreeCAD document and import it again with new shape.
Hope this tools comes handy to more people that look to automate their design and manufacturing process.