We’ve had Customizable Button Mappings for Controllers in Halo CE, Halo 2 Vista, and Halo Online. Please add the same customization available to keyboards for controllers! Using Steam or the XBox OS to remap controls is not an excuse when the same could be said for keyboard controls and needing to remap them in the same manner. The game itself has in-game customizable keyboard controls on PC for a reason. Please apply the same reasoning for controllers.
Past Halo games on PC allowed for two different controller key binds to replicate the default functionality of any default controller action. This means separate button binds for Holding a button down and Tapping a button. This would also be a very welcome return.