FYI The US BD doesn't have a 7.1 track. It's just standard DTS-MA 5.1, the German BD has a DTS-HR 7.1 track though
The US BD though is upsampled to 96Khz/24 bit though
I noticed the French BD has a 5.0 track that might be worth checking out
would love to see someone preserve The Big Blue (all different cuts and scores) just throwing that idea out there