I saw the other thread - very interesting. Frankly, it is a long thread, and only one person (Steven Frizza, I think) put forward an example of perfect registration. I would think that the courser the screen, and the less random, the more likely registration would be possible. I think it would be extremely unlikely with as fine and as random a screen as Autochrome. I give the prize to holmburgers for his perseverance, however, in trying to come up with a system from scratch.
I guess in my little world of photography, which is very small, the goal would be to abandon computers, use true analog science, and try to create something like an Autochrome, which probably offered the best resolution of any of the screen processes. I fear that this would likely be limited to using glass plates and a screen coated thereon. I would imagine it would also be far easier to accomplish than trying to use a registration system -- except that producing a panchromatic emulsion seems to be difficult, costly, and where successful, a closely guarded secret.
I am thrilled that people including members of this thread are investing time and energy in this. As technology advances, it dumbs us down, and we lose old skills. I am glad people are keeping those skills alive.
I would probably get involved in the experimentation here is a commercially available liquid panchromatic emulsion were available, but it is not. Trying to make such a thing is way beyond my capabilities at present.