A bit of constructive criticism. This shoot has everything in it to be excellent... and yet it feels (to me) stilted somehow. When I ask myself why, I think it's that the "audience" / "participants" don't feel truly empowered. Except for a couple of them, they feel very hesitant, shy... they don't speak up (most of the voices you hear from the shadows come from men) I would like to see them talking directly to the sub, looking at her and saying what they think of her, I would like them to be more active.
You will say "We can't control that..." and I would say you are partially right. but I think there are specific actions you could take to ensure that the audience feels more empowered towards the sub.