I think Windows 8 is for tablets and not desktops.
Ergonomically, it does not make sense to touch your screen while at a desk.
If going for efficiency, removing the capacity for hierarchical sorting doesn't make sense unless the number of launchers is below the number of launchers Windows 8 ships with.
If using for business, the number of launchers will be way too high, and good luck telling users where to find the icon for something in a 30-page scrolling matrix of icons that can be freely rearranged by the user.
I respect the attempt to merge the experience between tablets phones and desktops, but they took a big misstep when they removed desktop features in favor of touch features. They should have kept both.
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