However, it should be said that these will only apply within KDE applications. If you’re using third-party stuff, like Firefox, GIMP, VLC etc., they won’t apply.
If you really want to go hard on rebinding all kinds of keys for any application, you can also do things like these:
As cool as both of these are, and as much as I would still generally recommend picking KDE for these kind of customization possibilities, I wouldn’t recommend overdoing either. You won’t be able to use other PCs anymore…