Woah seriously? Google needs to cool it on the padding and add a little bit more definition/differentiation to the different app areas. This is getting a little bit out of hand; brains need at least a little bit of direction to know where to look.
Also, they removed the colors from the folders in the sidebar and in the document list its now the font color and not the background color, what makes it difficult to see which ones are in which folders.
And I agree that the lack of visual page structure makes it hard to look at and use. I generally favor a clean look but this is a bit extreme.