The turbine releases video is even a huge upgrade its sharper brighter and black levels and the colors are better.
I haven’t got the US set to compare to but if the evidence is to be believed it is a good upgrade. I was given a couple of stills from the Turbine set for the episode Give Me Liberty… Or Give Me Death. I’ve corrected the Colorspace issue on the UK set and compared the screenshots. They are almost identical. Certainly the colour is indistinguishable from the Turbine set. The Turbine shot had marginally better detail / film grain. It just shows how frustrating it was that the Fabulous Films set had the colorspace issue as they were very good transfers.
I think in motion the Turbine may show more of it’s strengths over the Fabulous Films release by virtue of being a newer encoding/compression of the masters as software gets more and more optimised, Turbine probably done these late 2021/early 2022 vs 2016 for the Fabulous Films transfer.
Though from what I’ve seen colour space issue aside, the Fabulous Films release trounces over the Mill Creek release which seems to be the worst and it comes with lossy Dolby Digital audio vs DTS for the others.
Turbine supposedly got several masters from Universal and picked the best ones to work with so I’m curious to know how much restoration/remastering work Turbine put in or asked Universal to do.