This might be very wishfull thinking...
I am an architect, and use CAD to make plan drawings, and illustrator to make them look good (adjusting lineweight, stroke, color and so on). But if i make an updated drawing in CAD, i have to do everything all over again in Illustrator. It would be awsome if illustrator was able to give a specific layer a specific lineweight/stroke/color etc... and was able to update this on its own!
Jean-Michel Le Goff commented
Is there any update on this topic?