I finally got around to implement proper countersheet layout configuration to my Inkscape effects
. It is now possible to create a layer (that must be called countersheet_layout) containing rectangles that describe how to layout the countersheet, ie to match a die for diecutting, or if you for some other reason don't want the counters to just fill up the document in one big rectangle. The example shown above (front and back) is just a simple template with two rectangles. When there is no more room on the countersheet new layers are automatically created for another one and so on until all counters have been created. The idea is that the front and back sides should line up perfectly for double sided countersheets, but II would do a few test printings and punchings without using this to create anything for mass production. (You can see a small part of the layout rectangles on the back countersheet image above. That is because the layout is not centered on the page. Nothing wrong, but I probably should have hidden the layout layer when printing the backside..)
As always let me know if you find any bugs or have any ideas about what more features to add.