Seems to me if there's no Finder you're just running applications on top of a Unix core, so any machine that runs Unix (or whatever) would give the same user "experience"--not good for Apple! If on the other hand you want to move the "desktop" experience to the peripheral dock, menu, and sidebar space allocations, then you're just changing the desktop metaphor. I personally use the desktop to display my favorite scenery du jour, and as a momentary saving place for documents, etc. before they get put away. I've turned off "show mounted disks and servers on desktop" since Panther allows us to show them in the sidebar. Pretty soon we'll probably be able to dock the finder and other menu bars and turn them off on the desktop, then with the dock hidden the entire display will be my own private playground. And when "smartlists" (like iTunes and iPhoto) make their way into the finder sidebar the Macintosh Finder experience will be about as advanced as I can imagine given the current technology.
How about "Tiger: The End of the Macintosh DeskTop? Or even better, "Tiger: The New DeskTopless Mac!" That might raise a few eyebrows!

