For me, the best and most riveting parts of Part 1 were hearing from former insiders (other than Sarah and Mark and the other two) who had suffered from NXIVM's abuse. If we hear from actual insiders (or former now) for Part 2, I think it could be very interesting, even if Keith spouts gibberish and we get artsy fartsy film footage from Mark again. And it's 6 episodes vs 9 this time