Until NGage type phones are more popular you will never see mobile gaming ever be taken serious. You wouldn't want to carry a gamepad with you where ever you go just to play a quick game. Sony has done similar devices that are more built-in. Considering how many people play games on their phones it should be a sought after feature, but I imagine that nobody likes to carry a device around that looks like something you give to your kids cause of the stigma of looking like a gamer.
Speaking of useless space how is this a good use of screen restate vs QWERTY phones which with a little effort could be given a layout that's also good for gaming and typing. Yet today we're all about brick style phones made popular by Apple and we think it's innovative when in reality it's just cheaper to make.
And yea it's way off topic but I really hate the state of today’s smart phones.