Granted a few things right off the bat would make me quickly argue your statement of “improvement of the user experience”.

A few points:

You can see the flash container is massive.. So instead of having a traditional chrome that scrolls, you have a flash scroller (which funny enough doesn’t work with my mouse). Boo.

Secondly, I see nice URLS, but going backwards via the backbutton was all over the map.. Which is unacceptable since the back button is the #1 button pushed by users on any website.

Overall, I don’t understand why it took over 2 years to build this (I remember seeing your demos back then). As well I don’t feel like the site is that big of an improvement! If they would have implemented faster it would have been more impressive..

My 2 cents..

David