Frank, I agree with the U of MN comments. Too busy for a main page but I like their use of graphics. Perhaps an idea to borrow for the opening teacher page.(After all they have a wide range of instructor familiarity with Moodle, which is one of our major issues).
I looked at the Mediawiki.org site. Digged and ended up here
http://www.mediawiki.org/w/index.php?title=Template:Main_page&action=edit
The main page is really made up of around 30 templates, plus I suspect some classes and features we do not have.
In the past (which is probably unfair when talking about the future), MD was kept simple so it was easy to edit by people who did not know anything about a wiki. Since the front page of Docs is locked anyway, this is less of an issue.
I am also thinking we could get many of the effects of mediawiki.org by using templates ourselves. Consider a table on the front page like Draft 1. Instead of placing images in the cells, we place a template. The template happens to be a table with 2 columns, one has an image, the other links.
On the other hand, I would like to have a couple of more features available for use of at least someone with sysop rights 
Thanks for the links. Chris
As much as I think the Moodle Docs front page could be improved, I find the Joomla page very confusing and much too crowded.
What might be an idea is using a colour scheme for differentiating between the different user groups.
The draft1 page is more like a splash or intro screen which provides too little information for my taste.
Frank