My favorite tip of all was when you used the Scale tool to move the unlocked direction handles together. I've always hoped Illustrator could do this, but never knew of any way to accomplish it. I have always just had to eyeball it and use guides to try and match a curve evenly. This is brilliant!!

Coming a close second and third in favorite tips was the tip where you include a point with your object when using the Transform tool, and then the bonus tip at the end with the spacebar to re-position your point. Great tips, all of them!

By the way, I am curious in your example for this tip with the transform tool with center point, are 11 copies of the center point made as well? I guess it's not a big deal, really. And if you did expand it, you could always just clean up the stray points.