This is one of those ideas that sound great until you think about the details for a few moments. Twice the desktop space taken with no real additional functionality. Where do you plan on putting your keyboard?
In your lap?
True you have 10 points of contact but you really don’t have any more control than with a mouse and two fingers due to its software restrictions.
Global zone? God help you if you have more than 10 programs installed.
Then you have all your programs lined up in a row, this would actually slow you down. While you spin these things around looking for your window I’ve hit ALT-TAB once and am already back to work.