Oh, c'mon! There isn't too much Microsoft can add to Office anyway. Name me some features you want that are not there. Personally, I cannot think of any.
And the look of the 2007 version is awesome. It is much more functional now. I am eagerly waiting for the Mac version. Just have a look at the screenshots, it is much better than even the Windows version.
Office is one of the very few products that Microsoft has got right.