InDesign and Illustrator have a more robust packaging feature. The cure for FrameMaker is to put in a detailed feature request here: Tracker and then come back and post the link in this thread so that others with the same request can follow the link over and vote it up.
The Basic Package is a package of utilities for FrameMaker. One of them is a Transfer utility, you can transfer a single file of a complete book into a single folder. It grabs everything no matter where it is on your computer/network. I have been using this for years, mostly to package everything for translation.