Yes, this feature needs more development. I still think the icon for this stacked layout can easily be overlooked by those who have never seen this before. Maybe it needs another color or design.
As I was about to send some drawings out this Friday, I couldn't actually use it and had to divide the schedule out over multiple layouts. Each would need to have a unique ID and even if I wanted to paste over the drawing number – that text will display across all of the stacked layouts and would still have one unique number. This would be the case for all text on one page, and in this case, someone had written a note, attached to the last element in the schedule, that was visible and overlaid in the middle of the prior two pages.
Perhaps a better way to do this would be to list drawing numbers "A-450-10 – A-450-1X" contained on the stacked icon, depending on the number of pages needed, automatically generated in an incremental manner. And still be able to be unfolded, as the later file structure, to access those individual drawings. And allow for the individual and repeating text within.... it would be nice to have a good way of repeating notes and info on the right side of drawings.