Corner weight.
There are as many opinions out there how to corner weight and setup the car as cars out there.
A good scale setup gives you a better feel of the car and it is slightly more predictable...
..if you race and you are a pro driver.
That means you need to take the car out on the track (even Auto-X) and log your time and "feel" - Corner weight your car and go back and see what improvement you made (if any).
Is the car used for street use the corner weight is just another gimmick. It will NOT improve your skills to avoid sudden objects, like mentioned before.
It does not improve the ride characteristics and all adjustments are zero if you carry a passenger
.
It gives a little edge on the track and some claim up to 1/2 second on the Auto-X.
But, I saw guys taking trophy's home they never heart of that method...