Throw some Rubicon take off tires and wheels on it, maybe some take off Rubicon rock rails. That'll give you a bit of a bump in the beef department. I don't know if the spring rates on your springs are the same as the 4 Door Rubicon Unlimited, but check to if you can get a bump with Rubicon take off springs.
Check the thread here about 15" wheels and 33" tires - light, probably the most inexpensive beefing up you can do in the looks department other than take offs. Maybe throw on a leveling kit up front if you have the rake, may not bee needed. It's an old-school look too, so if you had older Jeeps, you may like it.
Just a couple of quick ideas, there's tons more.