I don't want another window manager, even if it auto-tiles for me or has a really gosh-darn nifty way of hiding and revealing them. I want innovation in devices and apps that are designed to operate full-screen on all of them. It's as if I want a "tear off" function for windows that literally tears it right off the desktop monitor so I can put it in my pocket or shoulder-bag, or hang it on a wall, or prop it up next to a book. This is what the iPad and the iPhone have done to me.
Tabs, windows, task-bars, Expose, Spaces, ribbons and others are now making me feel like geeks are congratulating themselves on discovering a really nifty new way to organize their sock drawers and lunch-boxes.
The future of "the desktop" are cheap, wireless, mobile displays. Window managers should be replaced with pockets, wall hooks and stands.