Devil is interesting minor mode for Emacs (not my package). I have been using it for a while and it works very nicely. Earlier I have mapped Caps Lock to control, and Enter to Enter or Control, depending whether it is pressed alone.
But Devil-mode offers similar nice, non-modal symmetric touch typing experience, without a need for dynamic keyboard remapping, and using only elisp.
The Emacs subreddit had a post about Devil-mode few days ago, so I try to be active and Post here. Hopefully Lemmy will get more active Emacs users and posts, Reddit being now what it is.
I was using god-mode in the past. At some point I found it more effective to use remapped keys like you described. I’m on the fence though. The pinky stress is real, and devil-mode seems worth a look.