alt Hacker NewsIf you had good Live Tiles there was a ton of information density. You could have the weather, your calendar, recent emails, recent tweets, recent photos, interesting news, etc all on one at-a-glance screen (versus the phone form factor where you'd need at least some scrolling).
It felt like wasted space on the desktop because it was originally hard for desktop apps to opt-in to Live Tiles and send Live Tile updates and not enough people were using the sorts of multi-platform apps that had great Live Tiles.
Sadly grids of unrelated data aren't good for information at a glance. A wall of post-it notes will never beat a structured list; the old Start menu was a structured list, where you knew things were always in the same place (the Programs submenu didn't move or say "software" sometimes, and "programs" other times) whereas the Windows 8 menu was a wall of random post-it notes flung on the screen and you're meant to gaze over the entire thing to look at unrelated data and somehow make sense of it.