The curved part of the perimeter is now riveted down, and a few more rivets have been drilled out.
Notice anything missing?
At first glance, anything looks easy. Like taking the back panel off. It turned out to be fairly time consuming because of the "hidden rivet" syndrome Airstreams seem to suffer from. But it is off now and I will add the back baggage door to the "for trade or sale" page.
About that pristine drip cap over the door...I haven't decided whether to sell it or cut it up and splice it elsewhere to make some of our dented drip caps look a little better.