Bubba,
Region 1 BTTF doesn't have DTS. The director decided to take out DTS to reserved more space for special features/documentary. An email from director to explain his decision about this matter was posted in Hometheaterforum.com few weeks ago. To summarize, he didn't notice much different or any different at all between DTS and DD5.1 in the mixing room. Therefore he decided take out DTS and put in more special features/documentary.
Duy.
As far as I know all of the extras on the R1 version are on the R2 & R4 versions. I'm having a hard time believing that the DTS was left off for additional features.
I would bet that Universal didn't care to pay for the DTS licensing for the large amount of R1 titles they were pressing. The average Joe in the US doesn't care about DTS if they even know what DTS is anyway. And by the amount of "warning" pages I see on DTS titles I'm betting that the average consumer in this county doesn't know what DTS is.
True, in my experiences with DTS remasters on a film that was filmed prior to DD/DTS/CDS/SDDS that DTS & DD sound virtually undistinguishable from each other. So a lack of DTS on BTTF probably really isn't much of a big deal.
The framing fiasco wasn't resolved beforehand so that they could make more $ around the holidays. And I'm betting that the lack of DTS was just another way Universal could add to their bottom line...