PC Keybinds - Alt/Ctrl non-reassignable?

For the love of all that is good and well, why are ALT and Control both locked to being Emote/Chat modifiers? If there is a workaround to binding these keys to say... Weapon Action or Dodge, that would be amazing..

Tab button and the arrow keys are also not bindable >.<

I just made a post about the arrow keys not being rebindable, and the only thing someone suggested was Autohotkey, so that really sucks -_- Why would they make so many keys locked? I just downloaded the game and really don't want to have to use a controller, but it looks like I'm going to have to.