Interfaces like this look cool in movies but your hands aren't 'designed' to be above your heart for an extended period of time. Now if you had something like a drafting table with a touch screen I'd be first in line.
Mount it above your monitor pointing down instead of setting it below pointing up. Basically, point it at your keyboard. Type, type, type, lift your wrist a couple inches, pinch, zoom, drag.
Type type type. Throw that away. Type type. Make that bigger. Type type type type. Run that.
I can't wait.