Phil:
Yes, my height was the cause of the issue with rear burner visibility, no question.
So far as my having another Americana, I would never say "never." It is nice having two ovens, and it is even nicer to be able to have them in a 30-inch space - more kitchens can handle that configuration than can handle my top choice, a 40-incher.
The issue with heat coming off the door of the upper oven was sometimes fairly problematic, such as large "company" dinners where you have everything blasting away at once. A taller woman could have even more of an issue with it, because a lot of women wear makeup, and the heat and perspiration would affect it.
If I were ever to have another Americana, I would want one of the later ones whose upper oven had the removable liner panels that can be put into the lower P*7 oven for cleaning. That's what I had before. I would, however, ask that any new Americanas weren't Harvest, which is what that one was.