Please allow different us to double bind vehicle controls

I use melee with LT, and would like to boost with LT. But the current controls don’t allow for this. Whenever I try to setup LT for both, one gets set to blank. The game recognizes that boost is for driver and melee is for passenger, so why not let us use the same button for both? I’m gonna try and see if I can find and edit the config on PC to juryrig the controls I want, but I feel this should be doable by default.