I actually really liked the win8 start menu change and the live tiles, even wrote some tiny homegrown apps with them. My logic was always "if I am opening the start menu, I will want to interact with that menu and only it until it's closed", so having it fullscreen made sense.
It's amazing how things can seem great when looking back at them. I remember when Bush was President of the US and we made fun of him for being "stupid". Now looking back he seemed like a great chap. The good old days...