At the Freightliner facilty I am at, we started a new "rule" for design engineers. You draw it, you put the first one on. Due to this program, we have saved considerable money, just in commonizing small hardware. It also does a world of good morale wise for the grunts out on the line putting this stuff together everyday!
As a side note, the comic relief of watching some of these folks could make a great "how to not" video. Some of the engineers look forward to it. They are not ALL egg heads