Hi DesuDeus, it actually works like that already - you can currently do an export or "Save As" of a surface or solid to AI format and when you do that it will write all the edges out to the AI file.

You don't need to do any special script or anything like that - if you want to write just some surfaces select them and use File > Export and if you want everything use File > Save As, and any edges on the objects being exported will get written as curves during the export.

But maybe I don't fully understand what you are asking for because it should be working exactly as you are requesting already...

- Michael