Ross, have you done any work with kinect v2? You probably don't suffer the same thing in Oz, but here in the UK we suffer with rain most of the year! It makes trying to do family stuff a bit crappy...
I had the idea the other weeks of making a fun family game, a bit like the original kinect sports, but more garden games. Frisbee, swing ball, down on one knee etc. Would be good for when the kids are off school and it's raining again!!
Don't think it'd be a huge seller, but families might go for it... But I'm not a game developer...