A second vote for including the DTS-ES discrete mix .. at least as a possible secondary audio track.

The 6.1 discrete mix is unique in that it was made especially for the then-new DTS-ES discrete system found in the then latest receivers. Mi Casa (who also did the Lord of the Rings mixes) went back and tailored the new 6.1 mix to take advantage of the new discrete center back channel.

After the 6.1 DTS DVD release, this mix to my knowledge was never used again. Later versions were either 6.1 matrix or 5.1.

So I'm all for the original 5.1 mix and that should of course be there. But given a DTS-ES discrete track wouldn't take up a considerable amount of space and is already tailored to the theatrical version, it too would be cool to have on tap... ;-)