Love the site and the features. You have done a cracking job!!
Only improvement I would suggest is having the Navigator menu completely separate from the others (style, settings, style manager, objects and assets).
I flick between my many different objects to look at or compare settings. It'd be great if you didn't have to click on the navigator menu, select the object and then click back on the style menu. Currently, I'm taking print screens on the style settings for an object, putting those to one side and then clicking on another object for comparison.
Just an idea.