Well, there's a fantastic idea. Apparently so many people are already in this better world: https://gist.github.com/tanyuan/55bca522bf50363ae4573d4bdcf0...

I have Karabiner Elements so I added it and it's amazing!

I tried this, but found it annoying that it will add a slight delay. Totally makes sense if you've been running on caps lock -> escape for a long time. I've bound caps lock -> ctrl and left ctrl -> escape.