I have nothing to suggest, sorry. But I do have questions.
As someone who worked with 8 inch floppy disks, I have never gotten over being concerned about file size. What does editing a PDF do to the file size? (And while I’m interested in the answer, I also welcome gentle observations that no one realistically worries about file size any more, if that’s true.)
In a recent interaction with a business, my responses were reported on four different screens. I saved each to a PDF; they are 38 KB, 42 KB, 64 KB, and 38 KB in size. I used Preview to combine them into one PDF; it is 485 KB. Why? What can I do about it?
I would expect editing a PDF would result in similar bloat. Is that ever an issue?