One point ... the Kaiburr Crystal was actually a plot point for the original Star Wars in an earlier draft. It ended up being central to the plot of "Splinter of the Mind's Eye" which was a novel that came out between Star Wars and Empire. The origin of the Expanded Universe. MF dug this plot device back up, and it made the very end of BOTF so much better, as it gave explanation to what this Crystal Ball was that Padme gave to Nass. Hopefully that gives a little more background to where it came from.
Again, welcome to the boards. Look forward to your participation.