A lot of places like .dxf or .pdf for laser and waterjet cutting.
It's great to be able to open a sketch and export to .dxf for that, but invariably they tell me that the curves are duplicated - and if I open in Illustrator, every single curve seems to be traced twice.
On any design with the slightest bit of complexity, it's a huge PITA to manually go through and clean those up.
It'd be extremely useful to fix that