I've used these exact words myself. I've always been a proponent of customizing, whether it's grips, guns, holsters and so on. I traded off many guns I had converted back in the late 70s-early 80s, but I've kept everything I've re-done in the last 10, including a Model 64-5 that I re-barreled to 3". The 4" 64 and 65 are perfect candidates for re-barreling or even cutting the barrel to make a 2 1/2 or 3" (2 1/2 to copy those 2.5" Model 10s made for one or more State Police agencies a few decades back.)My opinion is the exact opposite. Make what you want if it makes you happy. I’ve rebarreled a handful of revolvers myself and I enjoy them more than ones I’ve bought.
As for swapping parts, I picked up a 3" Model 60-3 DAO a few years ago but never used it because it had a factory bobbed hammer and that same finish used on NY-1s. I found a trigger and hammer that worked together and put them in. It shoots as great as it looks. And I of course, kept the parts "just in case."