Just finished doing the final tweaks on my workflow. I replaced the PAL-VFX with the corresponding NTSC-VFX to increase fluidity of motion. I also added more professionally purchased grain to combat the artificial wax look.
New comparison images can bwe found here:
Video sample (PAL-DVD in 720x540p; free, no password):
https://www.dropbox.com/s/l7me3nollnuscne/Caretaker PAL-DVD - Through the Galaxy.mkv?dl=0
Video sample (4K Upscale in 2880x2160p; free, no password):
https://www.dropbox.com/s/nwue43x9ri5hncp/Caretaker 4K Upscale - Through the Galaxy.mkv?dl=0
I just thought I provide both images and a short clip, since everything looks different when in motion - please be advised that the PAL-DVD clip runs at 25 FPS with higher pitched voices while the 4K Upscale has been restored to 23,976 FPS with lowered/corrected pitch to sound like the original (as it should).
Have fun and let me know what you think.