Funny I've been thinking about this. With buildings the three methods are preservation,restoration and renovation. I watched a hotrod show recently and I got bummed out when they took a perfectly restored model A truck and chopped it up. I personally like the idea of preservation, I just got a 1954 raleigh sports. It has dents,scrapes,faded paint and several later parts (grips,saddle,fulcrum pulley) but I'm not going to spend the winter making it a sunny day bike with a Q-tip and magnifying glass. I don't like the idea of grinding the frames for the sake of a trend. I guess thats a lot of weight , just think how much faster I'd go if I took off that chaincase.