well I'm not sure if you meant game wise or app wise....now that apps are on consoles too
to me it already has a killer app with voice recognition.... it's crazy how many time I feel natural to speak to my TV to operate it, just to realize I'm not running on XB... or even worst, right now I'm not at my place and didn't take the Kinect, so when using XB I really feel it's awkward, slow and unpractical (no more eating lunch while browsing the Xbox video store or at least not quickly/practically) .... so if my use of Kinect 1 or in that case not using it feels like missing something already I can't imagine with Kinect 2.... it will be like going from win 3.1 to win XP....
talking to devices is a natural thing as long as they react accordingly and without lag, it makes perfect sense no matter what some others might say (lazy, don't want, etc blahblah) unless you are disabled, speech is your main and most natural mean of interaction since you express directly what you want without intermediary... I guarantee you before I die we'll be speaking to a shit load of devices in the house and outside if not the house itself.... and well some people will be using remotes :D like some still have cassette tape Walkman or CRT TVs
now if motion control works well and while seating down, now that would be my second ++ in menu navigation... like Netflix, navigation is not the most practical with the voice (still faster if my pad is turned off and on the other side of the coffee table) but if I could travel through menu with my hands without to much lag and accurately rewind or fast-forward (because with voice or the pad it is just plain bad on XB360) that would be cool
for games I would love an on rail good old arcade shooter, like time crisis or virtua cop... or a good old cowboy and bandits shootout with the bad guys popping out and all but with the power of the current gen...or a superman/flying app with high quality 3D rendering of famous cities and places, so you could fly around and have fun like do a low pass next to the statue of liberty or pass under the Eifel tower.... then drop straight from Mount Rushmore and then dive it the crater of a famous volcano... etc a good table tennis game too like the rockstar one on 360 but with good Kinect support...
well anyway with the console being open to indies and the Kinect being packed in the box.... I'm sure we will see way enough killer apps/games to satisfy my needs...
