Less is definitely more.
One of the best compliments you can give me is telling me that you love the car and it stands out but you can't figure out why it stands out. Everything I do to my car has a purpose and I fits in the general theme. I don't ever want any one particular item or part to stand out more than the others. It all has to blend and go together.
I got the best advice from Chip Foose when I was in tech school years ago. He told me to never build a car to look modified, but to look like that's the way it should have come from the factory.
No one should ever open up your car door and say, "whoa! Cool shiftknob!" or "wow! Nice billet power mirror knob lol". The only good compliment is "wow, that's clean"