Yeah, It's pretty much only useful for confetti or snowflakes, both of which I've used it for. But as I experiment with it more, I'll probably find more uses for it. For example, I'm already thinking of how to use the technique to make myself a better sig - a black hole that constantly spirals inward. all I have to do is tween the square closer and closer to the transformation point... or something.
Also, I thought this pic was so cool, I just had to post it. Threre's a mere 7 tweens in that thing. 6 for movement, 1 for the spinning.