No personal experience of the DVD-A, but your post sent me to my library to spin the CD for the first time on the man-cave surround system.
I saw them on their farewell tour in a small hall when this was their current release, it was a great concert.
They played most of the album, loved the new songs mixed with their back catalog.
Bought the CD (their last studio album to date) and played it a lot when I was driving 20+ hours a week.
Brought back great memories of the live show, hard-rocking anthems with literate lyrics.
YouTube "Making Of" video that from the enhanced CD:
https://youtu.be/Ye5XfUyLC-4
But, all my listening was in the car, often on a iPod. :steering:
Which masked horrible brick-walled mastering.
Hearing it now on the home system, the tunes are still great, but sound like an ear-splitting concert.
Had a look at the DR database, it rates
a pathetic 6.:yikes
This is only the second example I've found so far in my collection of inexcusable egregious over-compression.
http://dr.loudness-war.info/album/list?artist=midnight+oil&album=
Waveform grab Track 1:
I, too, would be interested in comments on the 5.1 version.
It appears to be scarce and pricey, so unless the mix and mastering are brilliant, maybe best left to the MO fanatics.