But you assume the alternative is to keep the whole building. If the alternative is to keep nothing, then this is great. (Although some of the examples work bet

But you assume the alternative is to keep the whole building. If the alternative is to keep nothing, then this is great. (Although some of the examples work better than others, of course.) Much of the feeling of the streets is about the first few stories of the buildings facing them. And big new buildings tend to be terrible at this, and are widely hated for it. Better to have strange hybrids than a whole city frozen in time by preservation.