Makes going back to the homescreen rather hard, doesn't it?
Or are you talking about some gesture like a three-finger swipe or somesuch being used consistently to get to the home screen. Which would, admittedly, be cool. However, if you think people complain about Android being unapproachable today...
"How do I run an application?".
"Oh, it's quite simple. Stroke downward on the screen once with three fingers, then sideways with two fingers to open the apps menu, then draw the symbol for that guy who used to be called "Prince" to run Chrome, trace out a Mandelbrot fractal to run Gmail, and draw out Escher's "Waterfall" in full detail to run Facebook."