Zach Locatt has released the Create Picotal Null script at AE Scripts. It lets you quickly create a null at key layer points and parent layers to that null. It is $5.99 or name your own price.
Here is the control panel.
Again, looks very useful, I just wish there was a way to have all my scripts in the cloud and be able to use them wherever I log in, as I work in too many other bays, and hate to get used to things that make my life easy when I can’t use them elsewhere!