Wiki for the trade page is a fantastic idea.
And I like the idea of a re-organized, simplified home page. Who should the home page target? I think there are few potential audiences; successful web sites design their home pages to one or more specific types of visitors. For bitcoin, I think visitors are likely to be:
1. Geeks who are interested in "how is bitcoin supposed to work."
2. Geeks who are interested in "how can I use bitcoin for a project I'm thinking of working on."
3. Non-geeks who are interested in "what the heck is bitcoin and why should I care."
There are also several audiences I don't think bitcoin.org should target (for example, people hoping that bitcoin is a way to get rich quick). Am I missing anybody?
I've been busy putting together a 5-minute talk for audience number 3; I think I can re-purpose some of what I wrote for the website.