If you are using your thumbs to control your movement how do you shoot or jump or whatever? Maybe the more important question, How many thumbs do you have?
We really need a standardized controller and some sort of interface for it. That is the sole reason I contributed to the Ouya kickstarter. they get it. Android games with a standard controller support. I get that not all games make sense for controller over touch screen but many do. Shadowgun, Dead Trigger, ect... I wish someone would come up with something. And something that works without jumping through hoops every time you want to play with it. I know Nyko is coming out with the ProPad this fall but I want something now. And I refuse to buy Gamestops POS. Looks too much like the PS3 Boomerang controller to be comfortable. I think its a goldmine business waiting to be cracked into.