I get output in the form of either an Excel Workbook or a PDF with multiple pages.

One task I have is to assemble a book from these unsorted output files.

It would be AWESOME if we could link content from Excel Workbook tabs and specific PDF pages so when I get output, I could just put it all in a folder and InDesign would be smart enough to link everything in the book design from the previous year.

Annual publications for TONS of folks would go faster if we didn't have to paste the data page by page every year.