I also have been thrilled with the inclusion of Digital Stars since its announcement and it really didn't disappoint! It was a wonderful way to kick off the concert experience.
I also LOVED the opening sequence, going through real-life Japan and the arrival of the Cryptonloids there, as well as the final real-life venue for the concert. Having the concert in such an everyday/accessible location was very different and really made it feel like a sort of spontaneous event that anyone could attend, sort of like the spontaneous outdoor performances of human musicians. In a way, it reminded me strongly of what we saw an inkling of in the virtual version of the Synchronicity event, although this has been enhanced many, many times beyond that. (I wish I could've seen the real-life Synchronicity event, which was much different from the virtual one, but I don't live in Japan. :) )