I think Leap Motion is great, but I think that same kind of sensing can be achieved through lower tech ways, like a multi-color glove plus a webcam.
It is a cool idea and I hope they succeed, but I'm working on the low-tech LEAP idea and I'd like to see how far that can stack up to their more complex system.
I would be interested to hear more about the low tech ways, but I don't find Leap to be overly complex. There is a lot of math if you're on the developer side, but I think you need that level of complexity to be able to customize it for whatever your needs are.
It is a cool idea and I hope they succeed, but I'm working on the low-tech LEAP idea and I'd like to see how far that can stack up to their more complex system.