If you had double the free length and half the spring-rate, wouldn't that give you the same ride height and a "softer" ride? I'm sure this spring doesn't actually exist for our jeeps, but thinking theoretically here.
My understanding is that the 1000 pounds of weight you place on the, lets say for the sake of easy math, 100 lb rate springs compresses the spring 10 inches. If you place 1000 pounds on a 200 lb rate spring, the spring only compresses 5 inches. My understanding is that these two springs with different spring-rates could have the same ride height if their free lengths were appropriate (big distinction here).
Would the longer, lower spring-rate spring not compress more easily while going over small events than the heavier rate spring? Or would coil bind caused by such a long spring make this whole setup a non-start?