Hm, I feel like I've tried this and couldn't get the behaviors I wanted. How does this accomplish e.g. overloading control-C to copy across the system? You wouldn't want to map command to control, since you still want control-C to be control-C in a shell. Know what I mean?
I use Keyboard Maestro to remap ctrl-X/C/V to copy/paste everywhere except Terminal/iTerm. Same for Chrome so that the Ctrl shortcuts from Linux work on OSX as well.
