Well I do understand it's basic, but I like how isolated the applications can be. For example, I can go full screen with flash on IE for Metro, or with other "full-screen" applications and it will only hijack the portion of the screen that is taken up by IE. I can keep using Skype or even the Desktop on the side and multi-task. If I try to fullscreen Flash elsewhere it hijacks the screen and even with a second monitor breaks my multi-tasking experience.
So if anyone made a Tiling Window Manager that isolates how much an application can control, and gets rid of this config it to make it work mentality, they would have me sold. I love having multiple desktops on Linux, one feature that Windows lacks to this day. Their tiling, although incomplete, it works for me and what I do.
Sorry if I offended anyone, I'm not a tiling guru, though I'd love to be. I just prefer applications that "just work" without too much effort on the end-users part, as opposed to getting in the way of the end-user.