This is pretty nifty, thank you. You are probably aware that you can do somehow advance remapping within Desktop Environment or Tiling manager level. KDE is decent. I mutilated i3wm config with Xbindkeys and Xmodmap. Keyd feels like a vastly more sane approach, not to mention the inevitable death of X.

Thank you for the write-up, you know you wrote that for just a handful of nerds with problems like this, happy to report you helped one!