I will let Geo chime in here too, but since I just just posted and just saw this, I wanted to see if I could answer that question for you. Modern Fender tort does have some depth and is not copied pixelated stuff like copied Japanese guards, but the main issue that makes Fender guards no longer like its original vintage counterpart is that they now use different materials, such as new dyes, etc which make it have very sharp lines, harsh edges, vibrant dark color, with a very stringy flowing appearance. In the 60's the guards were soft, smokey, puffy, swirly, with mixing colors that tend to blend oppose to divide and counteract from each other. Many time vintage guards will also have almost a blurry like appearance to them as well. So in modern terms I could say vintage guards were film grain speckled and soft like celluloid film images, and modern guards are in High Definition, sharp and crystal clear with deeper richer contrast.JIO, do you know if Fender Custom Shop's tort pickguards are dot patterns, too? I think that they do have depth, but I may well be wrong.
Here are some picture of vintage guards up close so you can see what I mean. I mixed in a few of my own guards too. Granted there are some vintage guards that were a little more sharp, but in the wide majority this is more how they used to be.