@stuartk
I guess I'm in a small minority -- I much prefer the band's sound-system in say, '72, to the Wall of Sound. To my ear, the WoS creates way too much space around each player.
There are some excellent performances on the Movie sound-track, no doubt, although "Donna Skreetch" does spoil a few. I don't know what changed (better monitors?) but when they came back from "retirement", her singing was much, much better. She was no longer over-singing and her pitch was hugely improved. I know some people hate her but when she sang in tune I enjoyed what she brought to the band.
I like the '72 sound as well, the redone Europe '72 mixes are well done and really convey the energy of the band. I understand your thoughts on too much space around the players, but I guess I sort of groove on that a bit.
Probably the most disappointing box set I bought was the Winterland '73 discs. They are just lifeless unless you turn them up really loud, and my ears won't take that anymore. Not sure what happened between 72 and 74 with their sound system.
Donna always said she could never hear herself on the monitors, guessing they improved that for her, a bit, after the hiatus.