Hallihallo Laserschwert, great work, thank you very much for that 😃). One more question, maybe there will be something with more data rate, i.e. a version around 80 or 90GB for e.g. Doublelayer BR or as a file for playback.
A dual layered Blu-ray is a BD50 as mentioned in the OP, which is about 45-ish GB.
Non one does 100GB home discs like the studio because of very low compatibility between the recordable discs and set top players.
Also scope titles have a lot of black pixels making up the letterbox bars, so the number of active pixels means very high bitrates are not as needed as 1.78:1 films.
I wouldn’t imagine there are any quality issues, but of course let the OP know if you find anything.