I think they could've done better on the new post processing too. We've seen what's possible on emulators with reshades. These new effects look like garbage in Shenmue 1 plain and simple.
Are you trying to provoke an argument? It's certainly easier to tear things down than to build them. I really don't like the emulator vs. port dynamic going on. Who are these lazy devs who got all the plum jobs at studios while the brilliant hobbyists can't get a foot in the door? How did they do that?
Some interesting things have been done with emulators. But they are usually accompanied with some serious caveats that would prevent them from ever being released commercially. Like the depth of field effect that looks cool in still images but is a glitchy mess in gameplay. It's a long road from 'this kind of works most of the time' to 'this is ready to be professionally released' and when you're on it, you often find that it ends up being even longer than you thought.