stacerbob: I had the same thought on my 2WD 3500. You say you don't have a block between the axle and the spring, but you may want to look again. Mine was only 7/8 thick, cast iron, and I believe it's part of the camper package. I removed the block from both sides, and left the overloads since I wanted to keep the as-designed laod capacity.
Unloaded it has a slight nose-down rake, but is much better. I never did measure before and after at the hitch, but I am guessing a couple inches lower.
Others have pulled overloads, leafs etc. to soften the ride and it works. Just remember you're turning it into a half-ton truck then, and you won't really have a tonner anymore.