I also think that, the very fact that the SACD/DVD release of Trick, contained the "still commercially unavailable" Genesis In Concert DVD, went some way to upping sales of this release.
Which, of course shouldn't detract from how magnificent the Album is.
I remember seeing the film at my local Cinema around 77/78.
The arena tour after that with the parallel banks of curtained white light for Los Endos was really great but those earlier shows with Bruford from 76 when they played in really close physical proximity are amazing musically. The thing about the Gabriel we is that they were more like a theatrical "pit" orchestra. In 76 and 77 they were just as powerful as Crimson around the time of Red. People underestimate what a simultaneously crunchy and beautiful noise they could make.