IMHO, the definition of "reasonable, respectful" - like the definition of "pornography" is in the eye of the beholder-community and will change from time-to-time.
At this point in America's history, I would not object to anyone constructing an American Flag Image on the side of and sized-to-fit Pike's Peak!
I agree. I saw this news piece and I think I recall the flagpole being as large as one you would see publically at a post office or firestation. Next? will the 'neighborhood associations' AKA= the U.N. be ordering the flying of the U.N. flag?