If you don't want the robot blazing around because of slight bumps or other movements when holding the controller, put in a deadband.
Basically, you're saying that the joystick should only go though if it's absolute value is greater than a specified level of tolerance. If it's not greater than the tolerance level, than the output will be zero (no movement).
You maintain the same sensitivity in general use, except that now you have to move the stick outside a greater
I hope this helps, if this is what any of you are looking for.