I blogged about Harvest and its progress a few days ago already. What I requested in there is still true: we need feedback from current and future users and people who are on speaking terms with modern Web UI.
I set up Harvest/NewUI on the Ubuntu Wiki which contains mockups and suggested use-cases of the new site. Please leave a comment, help with the integration or draw a new mockup. Let’s make the new Harvest kick arse! :-)