I agree. The new UI doesn't flow nearly as well as the original Woo UI. The new UI is not so fantastic. Swap the position of the menu content and the "tools" so the toolbar is on the right.

The tabs are also problematic because they aren't going to scale. The best way to handle this would have been to handle Menus like Categories, Tags, Posts, etc. Where you go to Menus and you have a list of all your Menus. You either click "Add New" or you edit an existing menu and then get the menu editor interface. It would be more consist with the rest of WordPress if they went this route.

Here was a quick UI mockup that I had shown on the UI dev blog when this change was being discussed:

http://www.twitpic.com/18zl8j

The tabs are also large and chunky. I know these are the same tabs that were introduced elsewhere in the UI, but they just don't fit in here or anywhere else they are used.

That being said, the functionality is FANTASTIC! Kudos to Ptah Dunbar and Filosofo for all the hard work!