> The one exception to this is ESC, and I use it gratuitously.

macOS has a built-in option to remap caps-lock to escape. I haven't used it yet (I'm not a VIM user, so I mostly just use it to cancel dialogs), but I've ordered the new MBP and it's the first thing I'll do. Should take care of that issue and even improve ergonomics.

I should have remapped caps-lock ages ago, I never use it, but haven't had the incentive until now.