I love the ability to set a hyperkey

Make Your CAPS LOCK Key Do Double Duty As a Modifier Key and Caps Lock – 40Tech:

Your Caps Lock key might be underused on your Mac. If you’re a big automation geek, why not use it for something else, in addition to its built-in functionality?

I love using this functionality. I share a computer with the rest of my family so it’s cool to have this around without changing profiles.