If you're already dialed with your springs, matching your front end weight, and positioned correctly within the suspension travel, as well as "good enough" shocks with sufficient compression valving, than the next thing that comes to mind when thinking about the specific scenarios you are mentioning, is a shackle reversal modification.
This would involve holesaw cutting the chassis rails and welding a correctly sized bushing to accommodate for poly bushes for the rear positioned shackle if you do not want to raise the vehicle significantly.
However, this is a lot of work and you would have to ask someone who had done it if it is worth the hassle.
Good luck
