I can respect your viewpoint but in the case of BTT I just have to disagree. There is so much potential held in the trackpad and the magic trackpad (heart) and Apple has yet to scratch the surface. I mean, they've trickled out added functions over time but, when the magic mouse was initially released, it was very bare bones. Not long after, BTT came to the rescue and really opened up what you could do with it, especially with the magic mouse and later the trackpad, and suddenly was less than useless. By the time more functions were added by apple, I was long used to the more extensive functions made possible by BTT.
What I like about BTT is it does such a fantastic job at making it easier for you to do your work, your way. Not very apple, I know.