I made mine into what you people call "tacticool" because I like it that way. Of course I also have 2 more in cosmoline, bone stock, when I want the original look and feel.
Most of the upgrades are going to be on the inside though. Things like a proper trigger job, new crown, aperture rear sight (for some who like it), spring loaded firing pin, ejector port modification, etc. is not only fun to do because it makes you much more familiar with the gun but also improves accuracy and the already high reliability factor. I personally love working with firearms and making them into what I like to have in my hands at the range for the same reason people buy stock cars and tune them into racing machines. And after the proper modifications, if you know how to do them right, it will shoot better and more accurate, I can vouch for that. Also, nostalgia is a sign of weakness (JK XD)