It is pretty common with re-issues of old shows in that they can do quite a bit with the video but not a lot with the audio. Back several months ago I purchased the Blu-Ray box set of the original 60s Star Trek series that was actually remastered with some updated special effects. They did an excellent job of the update with out doing too much to disrupt the original video effects plus enabled you to compare the new with the old.
The sound "allegedly" is DTS Master Audo 7.1, however, even though the sound is coming out of more than one speaker(it was mono back then)despite a slightly enhanced bass, the sound really isn't much better than it was back when the show was first on the air and that is pretty much what I expected anyway.
I guess it is that old saying, "you can't make a silk purse out of a sows ear".
