Sorry Mashiro, let me respond. If it works for you, great, There's nothing wrong with that. I just don't think 90% of the computer using audience would be as productive with it as you are, or to put it a better way, they wouldn't put the effort forward to be as productive as you are with Expose.
It's like dual analog vs the wiimote. Dual Analog may work fine for some people, but it's a barrier and there is a better way to control video games. Nintendo proved that by doing something new.