It depends on who builds them. If it's non-resin and the federal government's, there's probably going to be an artistic element to it. If it is private industry, they'll be as efficient as they want to be to get to their goal. There's no reason that they couldn't be. In fact, durability by design, by appearance, makes more sense. That's why you see a lot of pagodas in China still: because they're appealing to the eye, they're not torn down.
