The only “service” that I could imagine with commercial blueprints is customization.
If the customer lacks the BP knowledge to have to resort to buzing your prroduct, he very likely lacks the skills to modify/extend it…
I guess it would require a separate licensing model of its own…
If you are really really concerned about illegal copies, you could dongle it with an Ilok (works very well for DigitalDesign/Avid)… :rolleyes: