BlueprintCropmarksPDFexport
Summary
The goal is to give parameters in the PDF export dialog in order to draw crop marks, bleed marks registration marks, page information and a color box. Copying Scribus's PDF export dialog would be a good start. See also Cropmarks extension and discussion for more details and possible features.
Needed features
Other features
Gez: Another interesting feature would be using guides as placeholders for fold or die-punch marks.