Nice trick: remap Capslock to Esc.
I find that people who consider remapping capslock to anything else are people who don't know how to touch type. If you are in that camp I would strongly recommend spending the time to retrain yourself to learn how to touch type with home row position. You'll find that the capslock becomes a much more valuable key. You'll also find that your wrists are happier. It's an annoying time investment,but it's a valuable one. I combined it with switching to Dvorak... which really hampered my typing speed for a couple weeks but also helped improve my wrist happiness.
I notice from observing other people type that there is an aversion to moving hand position, whereas the idea of moving hand position is not unfathomable to me, perhaps as I have played piano and violin.
I'm not averse to moving hand position, and I don't use the strict one-finger-per-key rules either, but I do try to minimise hand movement overall since it means faster typing.