The concept is actually pretty cool, but it would have be fleshed out a whole lot more. Like, a lot a lot more.
I presume the inputs would be with the buttons only and not the joystick. Obviously you can't do left and right at the same time, and the joystick motions would make for missed inputs galore. Using the buttons would be pretty confusing since they're in a line, and not oriented with the directions of the arrows.
How tf are you gonna hit left and right at the same time on a Neo? Do they plan on making a dance pad for the Neo? lmao BB is right though, need some big ass/tiddy Neo styled sprite chicklets dancing on the side.