Steel
You are perfect for XXX school because you want to do YYY based on ZZZ experiences. Fill in the XXX, YYY, and ZZZ and you have your story.
I agree that showing fit is extremely important, but I think it is more complicated than your formula, Steel. I am sure you've done much more than filling in the XXX and ZZZ in your apps!
To me the main difficulty was showing who I really am using a 'thousand words or less' format rather than showing which aspects of me might be valuable for the school. I left those decisions to the Adcoms - after all, they decide if you will "fit" in, and your task is to show the best you have on offer.
That said, you need to think of individual experiences that highlight your true self, i.e. the way you think and act, as well as your values, etc. At the same time, you also need to answer the questions in the prompt.
Writing essays is tough whatever way you look at it.