I'm not a huge fan of old albums being remixed into 5.1 - the Yes remixes from several years ago were particularly bad, relegating Chris Squire's massive bass grind to a minimal role in the centre speaker.
IIRC the Queen remix from that time treated John Deacon in a similar way.
I have recently listened to the Japanese 5.1 remix of Tomita's Planets and it's just mind-blowing.