> "Considering the strides that have been made with stuff like Kinect"

And it still sucks.

The problem with motion controls is that it's a solution looking for a problem. Why would I want to hold my left hand out below my hip at a 45 degree angle and hold for 5 seconds, when instead I can hit the "back" button on my controller, is a mystery.

It's the same problem as voice recognition - good demoware, poor products. We don't speak to our computers because the lag in feedback and the accuracy, while having advanced leaps and bounds, is still strictly inferior to hitting a keyboard (virtual or otherwise).

This is before we get into more fundamental usability problems like having to hold your arms out while interacting with devices. Minority Report should've featured Tom Cruise with gigantic arms, built up from years of holding his arms out in front of him all day just to do basic computing tasks.