Keybindings Are a Massive Pain

I'm having a devil of a time reconfiguring my keybindings to be for left handed mouse usage -- I use IKJL instead of WSAD.  However, it seems like I'm usable to remap WSAD and other keys to flip the keyboard.  Why can I not remap all the keys?  This seems like a serious bug to me because I'm running out of keys to map just to get all the things I need on the right side and still shove the unimportant stuff to the left side...

Please fix this.  Or better yet, give me a "left handed" controls option that flips everything by default!