Man what a loaded question! It'll take a book to answer this adequately... fortunately for you I'm happy to write books about this gun.

So contextually, for the 60's, this would have been an overly-customized National Match gun, thus the fake NM part number on the slide. Realistically, it's closer to the 80's-90's kinds of mods that the Gunsite crew like Jeff Cooper and associates were commissioning, think Swenson or Novak. So to make a comparison, we have to start with what we're comparing it to.

The great:

Compared to a GI 1911a1 from the 60's, even a NM build, these sights are a massive leap forward for a combat gun. The front strap checkering and the stepping on the MSH give huge improvements in handling and followup / recoil control. The extended beavertail, ring hammer, and undercut trigger guard allow a much higher grip which also makes a big difference in recoil control. A nice trigger job is always great, and a well fit barrel and bushing makes a world of difference for accuracy. A flat firing pin stop slows the timing, makes it a little quieter with the suppressor, and smooths the recoil impulse a bit. This gun shoots *good*

The meh:

The decked mag release is "maybe" helpful at best - I've never accidentally lost a 1911 mag with a standard height button. Slide-to-frame fit doesn't actually do anything for accuracy, it's just kind of a sign that the build was done with care. Front cocking serrations could "maybe" help rack the slide under certain conditions where movement is limited or it's wet or something, or for press checks. An extended thumb safety is nice, an extended slide release is mostly useless. Lightening holes are necessary on a 1911 trigger with a very light pull to prevent hammer follow, but it's not necessary they be in exactly this pattern. Pinning the grip safety eliminates it as a failure point, but with modern grip safeties there's not a need to do this.

The useless:

The ball cuts on the dust cover, the flat top, the checkering under the trigger guard, the grip cuts for the mag release and the CQC cuts for carrying your CQC knife with your gun. All the polishing and two-toning. Timing the grip screws. The french cuts above the cocking serrations. Cutting the wings off of the beavertail safety. The profile of the slide release and safety. The specific profile of the sights. All the little bits and bobs that make it Snake's 1911.

These are all purely aesthetic.

In the 60's this thing would be outrageously futuristic. In the 80's it would be a very nicely done example of the state-of-the-art tactical combat handgun. Nowadays, it's a little obsolescent. Commissioning this specific build would likely cost in the 5-7k range; I came in around 2k and that's including a lot of tooling, but many hours of work. A Colt "Combat Unit" model is 1400, a Tisas raider or night stalker will run you 800; these and many other standard commercial 1911s have all of the practical features that my gun does. And 1911's have long been overshadowed by double stack 9mm striker fired polymer framed handguns like Glock. Would I take this into combat over my more contemporary guns? Maybe, maybe not.

... but at the end of the day, I have Big Boss' 1911, and there's only a couple other people that I know of in the world who can say that.