I use KEYD for Linux (https://github.com/rvaiya/keyd) and write my own scripts
using xmodmap for games that don't require low level.
I use Autohotkey for Windows. 8)
WAYLAND isn't quite there yet for me, I use XFCE and it's still too buggy.
I agree, key rebinding should exist for everything.
Love the game so far!!! 8)