It would be great if the PDF printer could embed some georeferencing position, scaling and orientation info... like geotiffs
This way, applications like Synchro Control, Mstn etc can insert / Ref attach the pdfs automagically.
This seems to be a common problem for collaboration tools across the board. Assemble, Revizto, Dalux, BIMTrack, StreamBIM, BIMx all allow pdf overlays but struggle with the same problem since the info ideally needs to be produced and embeded by the publisher's app.
This would also be a great synergistic tool that would help on the iTwins side... by providing smart pdf overlaying functionality to anyone using iTwins Design Review for example.