Thanks Michael. Indeed I can open them in Inkscape, change the document size and then output them again as PDF before I pass it on. You're right that PDF assumes some sort of a physical paper size but it can be any size up to 38,100,000 cm^2 (if the library supports custom paper size). I would like someday some choice in paper size (or at the very least landscape vs portrait would help in some cases). It would be also nice to translate to document origin + margin without scaling, again this is mostly for communicating to someone. If I'm going to use them for cutting, I don't mind a step through another program.

Scott