Honestly, I wish a company would just make a simple light rear bumper. Nothing fancy, it could even look mostly like the stock bumper. Improve the clearance at the corners slightly. Modify the clearance scallop in the middle to match a larger tire radius. Add some simple tow hook supports. Use the factory hitch. Add a step on each corner for getting at things on the roof. With the factory hitch and supporting crossmember you don't need a big thick heavy steel bumper in my opinion. Something like 1/8" aluminum would be just fine if designed properly, heck even a composite bumper would be more than enough most of the time. So what if you have to change the bumper out every 10 years if you get too many small dents or dings.....