Not having to reinstall apps is good, but is it like the "refresh" of windows 8, that claims you don't have to reinstall apps, but wipes anything not installed from the windows 8 store?
(EDIT: in response to the poster above
Osmin, I agree with you that the start menu should be much more customizable. However, I disagree that it's slower - people seem to not realize that they can take items off the start screen quite easily. The way I look at it is that the start screen is a less-customizable taskbar, but as a start menu, it's far, far faster - typing is always going to be faster than using a mouse to hunt through folders, and all I have to do if I want to start a program that I don't have pinned somewhere is press the windows button and start typing.
I'm personally a fan; while I dislike how little one can customize and tweak the way the new interface looks and acts, it is faster, and windows 8 has a lot of nice / improved features. The trick to appreciating it is to spend five minutes working within the settings, not relying on windows store apps, and teaching yourself to use the windows key more often.