Imagine a game, using the Kinect or ps4 camera where it was like like you said, but a bit different. You would scan your yoyo, and start with level 1. The sleeper. Once the game determined that you have a great long sleeper, it will take you to the next trick, and so on. It would be pretty much like Rocksmith. Except with yoyos. It could say, congratulations on your long sleeper, now lets learn to rock the baby. It would then give a small tutorial and demonstration and than have you do it. It will be able to tell you what your doing right and wrong. It would actually be very useful to all throwers. But a game like that would cost loads an loads of money. And then they would have to make sure there were enough of us who would by the game.