Expressions in After Effects always have been both a curse and a blessing at the same time. Once you understood them, they offered up a lot of potential to do things more efficiently, but working with them always was a pain in the butt. The warnings were cryptic, you had no decent built-in editor and a lot about them often did not make much sense. Combined with the awfully slow evaluation speed it’s miraculous that I actually obsessed about this stuff as much as I did.
Head over to the site if you want to have a look, just don’t get your head spinning from all the other stuff. I really find it amazing (in a negative sense) what shitty and expensive scripts are out there for the simplest of tasks. Absolutely cringe-worthy. Almost makes we wish to re-open my stuff site, be it just to dry out the market by offering some of this for free… *yikes*