I'd like to add a point to the "overhead" comments -- while EditInSequence is intended to reduce much of that overhead, it's currently hampered by several bugs when using it to create pages (notably T340986, where the text layer doesn't appear, forcing the editor to OCR manually, and to a lesser extent T360282 where the index header/footer isn't loaded). I suspect caching OCR would be a nice option to add to EditInSequence, but these bugs ought to be fixed first IMO.