Using the "sticky keys" accessibility feature eliminates all my needs for anything like this, or for ctrl/shift swapping. One of the motivations given in TFA i

Using the "sticky keys" accessibility feature eliminates all my needs for anything like this, or for ctrl/shift swapping. One of the motivations given in TFA is four-modifier keystrokes, which a) are a great motivator for modal editing (IMO) over traditional editors that are heavily dependent on modifiers for keyboard accelerators (e.g., (neo)vi(m) vs. emacs), b) sticky keys. Sure, 4-modifier combos with sticky keys still requires 5 keystrokes altogether, but not all at once, so it's at least manageable. Most importantly sticky keys is a great way to avoid RSI! That's because with sticky keys you don't need to do all these deviations to hit multiple keys at once. Before I discovered sticky keys I thought I'd have to give up tech because typing was becoming painful. Sticky keys saved my career because as long as I'm disciplined about sticky keys usage I don't get hurt by everyday typing. Obviously YMMV, but I strongly suspect that many people type incorrectly by trying to hit modifiers and modified keys with the same hand, and also any apps that require more than one modifier will necessarily require at least two keys to be pressed with one hand, and that seems like a recipe for pain-causing deviations. E.g., ulnar deviation, which is when you turn your hand outward to hit a key with a pinky (typically) instead of moving your hand so the relevant finger is closer to the key it's meant to press. All these deviations stress the associated nerve, which then causes pain. Sticky keys is also available on every OS. Not so sure about home row mods. TFA should list sticky keys as an alternative of sorts.