I really dislike sway bars. Sure, they can cut down on roll angle, and sure, they can be used to tweak the car balance in a more convenient way than swapping spring, but they do so in essence by reducing grip at the end of the car that grips more. Also, they stiffen the suspension on a single wheel bump too, besides roll, which means they do not contribute only at same and simultaneous movements of wheels (heave or pitch); at which point you could swap in stiffer springs and use them also to cut down on pitch angle.