Hmmm, good question! With the short wheelbase and light weight of these little trucks there's not much you can do to absorb those kind of sharp edged bumps fluidly. You'd have to increase the suspension travel significantly, like 5" or more, and have that damped by some pretty serious struts. Like desert racer style, upper control arm added , remote res strut ( or 3 ) with both high and low speed compression and rebound damping adjustments. For the rear, long travel 4 link maybe, again flexy springs with really well damped adjustable remote res shocks. I figure about 5 to 10 grand oughta do it.
Have you tried lowering your tire pressures to factory reccomended levels? 23 lbs is called for, you can even go a tad less in the winter.
I don't know how fast your driving, but If I hit anything like a frost heave ( tree root, small sharp ledge etc) blasting through the woods at more than a brisk 25mph it feels like I'll tear the front end right off the truck. Plush these are not.