Neat concept, though I'm not sure of the ergonomics of the button placement. The move to a dual analog stick model led to more use of trigger buttons, with the right-thumb buttons being used more for games that didn't need a dual stick. This one is more like a SNES controller.
(Strangely, I keep confusing you with Jenna Moran, another creative person; been reading one of her tabletop RPG books. This is a compliment, I think.)