Looks great, Jack.
Local welding shop is quoting $1200 to build another like it (my buddy is inquiring since he can't borrow mine anymore /bcforum/images/%%GRAEMLIN_URL%%/smile.gif
I'd consider some STEEL diamond plate on the front triangle (welded). That would add some strength and a secure foundation for the winch and spare. Might even consider a small diamond plate box on top, hinged so it flips out of the way, with an electric winch and battery (locked) inside...for these HOT days! Got one in my Pace and couldn't do without it.
The open frame is certainly handy if you need to get under the car while on a trip/show. A couple Rhino Ramps would give you another 6 inches of clearance. A good canvas shop could probably make you a custom cover that would keep things from getting to the bottom of the car (though it's unlikely anything would...I know you won't be towing her in the rain); it could be bungeed in place and removed easily if you needed access.
All possibilities. Main thing is, you've got a good trailer now, that can be customized as you wish!
Ray