Dampers are generally not intended to control body roll.
I'm considering softer than stock front and rear bars for my car, but that's for gravel. It may make things a little worse on tarmac. Cusco has a 16mm front bar and a hollow 14mm rear (and there's the Mann bar).
Just for kicks...check out the landings in this video. Very different damper valving than what you see on a good road course set up!
- Andrew