It would be great if I could build a passage list and have it also gather then scripture references from footnotes, whether I use the clipboard, highlighted, etc. approaches. It seems to me that many books will put their references in footnotes, so to see the scriptural backup for a book in its entirety is impossible.
Small pieces of book are supported through the use of Power Lookup, but that would not work for selecting an entire resource.
For some background here is a thread on the topic.