The main purpose of the sprung links (coil springs, leaf springs, sway bars) of a car is to keep the chassis from bottoming out. The ideal would be to set the car up with coil springs just stiff enough to prevent bottoming out under the heaviest of braking maneuvers, and acceleration. The ARBs (we call them sway bars in American slang, perhaps elsewhere too) should be just stiff enough to keep the car from bottoming outin turns. Excessively large sway bars can actually lift the inside tire off the ground. There are very few instances where this is desireable. Obviously the coils will help in turning as well. Also, you must consider braking/accelerating when turning.
Playing around with different ride heights and spring rates takes a while but will help in the long run. On the whole, whichever end of the car sits lower, will have the most grip, and a lower car will have a better center of gravity. The softest combination of springs and ARBs will offer the best overall grip.
It should also be said that the tires also act as springs. Higher pressures simulate stiffer springs, and also reduce grip. The best pressuer setup will see temperatures progress evenly from the inner edge to outer. Camber angles will cause the inner edge to run hotter, but not by more than a few degrees. Camber angles should only be used to even out temperatures by putting the tires contact patch parallel with the road under typical cornering. In LFS, we can see forces on the tire. I like to see even forces during cornering.
For the most part on production cars, Larger sway bars are added to limit body roll since the suspension geometry causes radical camber changes as the car rolls (I believe Macphereson strut setups cause this). It's not ideal, but it must be done if you are blessed with one of these cheaper to produce suspension designs. Racing oriented designs correct this and allow the car to roll up to the point that the chassis comes within milimeters of the ground (double wishbone setups help by having adjustable chassis pivot points). I will only say a word or two on dampers, and that is that as novice tuners, we should keep stocklike values unless we have radically raised or lowered spring rates. Adjustments to dampers should be proportionate to spring changes.
Spending time in the pursuit of increasing your tire's contact patch will increase overall grip. This is done with camber changes to even out temps from inside to outside and pressure changes for middle to outer. Once the tires are cornering flat and operating within an acceptable temp range, small spring, ARB changes will have a large effect on handling.
A chassis tuner that uses adjustments to lessen grip is not doing there job correctly. The right way is to try to add grip to the opposite end.