... And that's it? Nothing else? They couldn't possibly use it more to their advantage by having Kinect be used more than just testing stuff?

No.

Well most ppl don't want it used in the game play but it would be perfect for these mini games n we couldn't play test your slice without it n that's fun ass mini game. Me personally I would like to see a Mk like. Power up heroes or kung fu high impact

Having a game support kinect requires lots of time and work.
I don't think its worth it for only those minigames. And it wouldn't work for anything else.

If it's only worth for the mini-games, then it ain't worth it. And will not obviously work with the main game. How many people actually used the Wii controls for Armageddon?

I like those mini games on the Vita, but why rehash stuff for a brand new next gen MK? Personally, I want the surviving good guys, the relevant bad guys (no lackeys, if they were in the past, they shouldn't be anymore), and an expansion / refinement of the previous fighting engine (ie better animation, more organic comboing, no gimmicks etc).

After that... The more that's new, the better. This is next gen. I want a big new MK experience and I'd like to see as much of Boon's pre-MKvsDC vision for the future of MK as possible. MK9 did a great job reimagining the original trilogy (alternate timeline issues aside), but it's time to stop relying on nostalgia and it's time to stop relying on stuff that worked in the past just because people liked it way back when.

I may be laying it on thick for a response to a few Kinect ideas, but I'm really just trying to get across the idea that after nine main games and 20+ years, a great series like this might want to try and innovate as much as possible. Several series fall by the wayside when they keep bringing the same game to market with only slight variation.