Huge upgrade in my opinion. That is for the Icons though. Don't have first hand experience for the LRs.
I've been wheelin' with the same guys for the last few months. One particular area we go, we're bajaing through a dry river bed. Typically I'm falling off the pack, white knuckling the whole time just trying to keep the truck pointed in the right direction. This past run, was hanging with them and having fun at it.
Other thing I noticed was during the rock crawling, didn't lose traction on the same obstacles like I have in the past. Figured I was seeing the advantage of getting that little extra droop when I was flexing hard.
I'm still on a high how the truck is handling off-road now. Even one of my friends noted how it felt smoother on pavement.
Maybe somebody will pipe in with their LR experience.