I watched it last night. Really nice and reminds me to listen to their music more.
One thing, though, is that I felt it was a bit rushed at only 1 hour. I feel like it could have had an extra 20-30 minutes to see/hear more of their work. Every time they discussed an action or gig, you only got maybe a 10-second view of it, which left me wanting more. TBH, I had the same problem with the Zappa documentary.
Also, I know it was only focused on the COUM/TG years, but it felt strange that they completely elided Gen's time with Lady Jaye in New York and the Pandrogeny project. Considering much of it occurred between the break-up and reunion of TG, a time which they otherwise covered textually in a "where are they now" style (including Genesis's first marriage & children), it felt odd to avoid mentioning that very major transition even if only in passing.