@hong - No stats for Zeitgeists. As things that cannot be killed or fought, there is no reason to stat them.
I like the article. I think I am actually incorporate it into my world, as it already kind of has ages which started with predominate individuals, and some sort of fluffy-rules for them is a nice inspiration.
Also, as a lot of people are continuing their homebrew, I think that WotC decided that they should give a nice little story tool to help them out. It is not for everyone, but it is a neat and handy idea.