However, getting the Control -> Command/Super thing to work is much trickier. The best way is to use this: https://github.com/mooz/xkeysnail
However when I tried that, I ran into all kinds of weird behaviours all over the OS. Also, it doesn't work with Wayland.
Most terminal emulators let you remap Ctrl+C, Ctrl+Z, Ctrl+V if you really want.
But that doesn’t really help does it? Because now you’ve made killing and backgrounding a process just as hard. What you need is an extra accelerator key, which is only available on expensive boutique keyboards and not available at all on laptop keyboards.
The more distance I get from using Linux as a daily-driver desktop OS, the more it looks like most of the benefits of its configurability and modularity are fairly superficial—especially in its GUI stack—while the harm it causes is deep.
MacOS has by far the best idea and implementation of how desktop keybindings should work (and no, I love vim but having desktop-wide vim keybindings doesn't make sense because not every input field can easily be modal). I'm constantly surprised why no linux distribution has copied this.