@MJBenito: if you find the time, it would be great if you could answer the questions I raised about the source and the sharpening differences, thanks.
As mentioned in the original post, the 3D bluray is the source used for this 4K Filmized remaster. I used my own Topaz Video AI settings after many tests to get the most natural look. That means that compression has been fixed and details may have a been recovered during the process. I made sure that no sharpening was added in the process because it was the main goal of the project : get rid of the oversharpened look of the official 4K remaster.
Unfortunately, I won’t have time for a v3 version. It is what it is now and I’m 100% satisfied with the 4K Filmized Remaster than with the official 4K master.