This value specifies how far an analog stick has to be pressed to count as a C Button pres when c Buttons are mapped to an analog stick. The old value did not allow for pressing two c buttons at once, because diagonals did not meet the value. This value specifies that an analog stick must be pressed roughly halfway to count as a C Button press, which allows you to push two C Buttons at once.
This is to stop XInput controller one from having to be used in first player.
Also remove the need for the bconnected variable, allows controllers that are connected at game start to be disconnected and reconnected for XInput.