Anyway, I emphasize this again: it's not a question if the actual result is better or worse, it's a complex question because there are thousands of people to evaluate it. The question is why not to experiment more where you have more liberty to do so. It's hard to experiment with a toolbar in Excel because millions of non-computer-geek users are used to certain operations and want to preserve their productivity. But it's not hard to throw away toolbar in an IDE because nobody will pay you less because of it. (Especially if you are actually trying to do your best.)
Metro after Windows is that kind of experiment (but way more risky and rewarding, of course). But Visual Studio is not inspiring at all after all these years.
PS. For that matter, Xcode 4 is not radical enough too. We are still typing a lot of boring cruft (even with ever-smarter autocompletion). But it's a huge difference with Xcode 3 and other IDEs out there.