I really like it! The Green / Purple waves look like fun! Sure no one who wants to buy something like Modern Warefare or Bioshock, .... would switch to buy Kinect just by the looks of that design. But it definitely gets the attention of the Wii-crowd, like I said it just screams ARE YOU HAVING FUN YET, but I do also think those 00,00$ Signs are helping a lot
Imagine the Wii packaging next to that, it will look very very boring. Sure that says nothing about the games themselves, but I guess most people buying these games don't read reviews and buy those games just because how they look (not the graphics) and hearsay.
But they better sell those Kinect games for no more than 25 / 30 because who wants to buy the same Wii games again for a price higher than that.