I really like the setup/story behind the game, it's really charming! I also like being able to stop each limb how I want to, giving me a decent amount of control. For the scoring system, it looks like you score more points by making the limbs go everywhere and out of place. A good way to spice up the gameplay could be to give the player a specific pose to match and have them try to make that pose as well as they can. This could give the player a more concrete goal for the core game loop.
But this was a really engaging experience, especially making really crazy poses!