Vader always was a little girl; you just remember it wrong, and saw what you wanted to see not what was always intended.
Previews have been a little mediocre. The Jedi storyline stuff actually looks pretty boring, but I'm getting it so the kids can be a rancor and go on kinect-fueled rampages across Mos Eisley, and we can pod-race
The DVD on my original Xbox finally died and we bought the slim with kinect. Highly recommend the Kinect in general - it's a blast. Especially with a three and a six year old, I don't want them accidentally chucking either Wiimotes (what a stupid name) or the Move markers at the tv, and the Kinect does a great job of figuring out what it's looking at, and adjusting to either an adult or child. Gunstringer is terrific, sports are a great as a family, and fruit ninja is way too much fun for what a stupid concept it is.