I want to use the mouse and with left hand on the throttle and right on the mouse I can't steer lol so back to the keyboard!
They have said for a while that getting a breadth of control issues worked out is not a priority.
Once they do get it all worked out, maybe they will have some check boxes in the options menu for throttles.
Pedals could be used to turn your mech. However, I don't know if they have those working yet.