My thinking is that if you make changes that will encourage you to ride the bike, do it. I do agree, there are cases where a bike should be kept as original as possible. Examples of my thinking on this are found on a couple of my bikes: my '72 Raleigh International will stay as "correct" as I can keep it, and I'll probably only ride it on special occasions, but my '83 Schwinn le tour luxe has only the original frame, fork, handlebars, and brakes on it, and I ride it more than any bike I have right now. The le tour luxe is "modernized" and a much better bike because of it (I should know, I've owned it since it was a year old). To each his/her own I say, just as long as you get out and ride-