I was just searching for the same thing.
Chris, how about a widget that starts with an ancesteral pair (father and mother) and shows a tree of their descendants coming forward up to five generations. Have it set so that the starting pair are required to be at least 200 years from present. That should cover privacy issues.
It'd be nice if it could be something like the Barebones 4 Generation Pedigree-Style widget, only working top to bottom, building a pyramid style tree . . . . spreading the roots so to speak.