TServo2049 said:

The sound mix is a major problem with the Blu-Ray. It's been processed to within an inch of its life; the tape hiss removal sounds to have taken a lot of the ambiance and echo with it. I've also read complaints that the directionality was messed up.

The dynamic panning was in the front for the DVD. It's now at the sides/back for the BD. If you do a custom downmix, it would sound about the same, surprisingly (minus the phantom/physical center issues).

EDIT: I'm almost sure, The 2000 DVD, in addition to the reverb that was already there, they added a bit more. The BD they didn't add reverb - the rears sound direct.