I would like to finish JJHQ someday, as IMO it would serve as a much better introduction to Jazz site than J2O or Haze's Hideout do, but I think it's something of a pipe dream at this point... I'll probably go through and add tons of content to the ERE at some point, I'm just lazy, and I would feel bad about all the content I would have to prune because it wouldn't fit into the ERE structure.
(Alternatively, if I knew how to make a JJHQ that wasn't based purely on HTML, so that I or other people could add stuff to it really easily, then things might be different. But I am a limited web designer.)