There isn't a good way to export a nice vector graphics model in AI or PDF format for use in Adobe Illustrator. Illustrator is the industry standard graphic design tool, so this workflow would be extremely useful. For example if I want to produce packaging for a product or marketing materials, I'd love to do the layout, lettering, background shading, etc in Illustrator, and be able to import a vector graphics version of my Fusion 360 model.
Illustrator will let you change the line widths, color the faces, etc, if I could just get a vector graphics model (.ai or .pdf) to import. The current workflow is using live trace in Illustrator from an image capture, but that's an extremely laborious process to clean up the vectors.