well since this has been brought back lately, I'll give my thoughts.
I'm pretty much with goatman all the way on this.
I run RE1462's. I removed the smallest leaf, and added the largest nonbushing leaf from an XJ upcountry pack. This kept me the same ride height, a little softer, and little less capacity. I'm fine with less load though.
I went for a little longer shackle, YJ style, and moved it out of the box (Crash has/had the same type of set-up and I think Capt. nemo has it done as well)...this will give free swing, and not have to worry about it hitting the box...that helps out a lot, and is not too much work.
as goatmand said and did...traction bar...with flat and/or softer springs, you'll just destroy what you have done. I have also done the same. If it's made correctly, it wil not limit flex, so don't listen to dummies that say that.
Xjoachim...some do seem to like the stiffer rear, but being in a situation where you're coming down a ledge off camber, the front is taking all the flex being already off the ledge, and the rear stays stiff...that's when you're going over, it has scared me many many times because of this, and that's why I worked so much with the rear end. I have only wheeled with my set-up a few times so far and I am already MUCH happier with it. To me a balanced set-up is much more stable that a stiff set-up.
kristoffers....it would hurt to do that a few times...I wouldn't go wheeling with the front sway bar on, but take it around with it on and max out the rear a few times...both sides. just repeat a few times...like ed said..give them some lovin'.
I remember a few years ago with my stock RE leaves, I had to pick up patio brick...which came out to a few hundred pounds, and almsot bottomed out my rear just sitting there. I had no ill effects and it definitely softened them up noticably after only a 20 minute drive home. So load up until your rear end drops and inch or so and just forget they're in there for a while.
_nicko_