The use case for this is something like
Group: Women
Members: Jenny, Kim, Mary
Group: Managers
Members: Kim, Mary, Bob, John
Group: Women Managers
Members: (Managers INTERSECT Women)
The goal is to simplify management, so groups don't get stale as easily with a sensible inclusion hierarchy. If there is no support for this out-of-the-box, what would be a good scriptable solution?