When I was watching the last episode of GFN S2, i came across a thought.
For instance - Nanno is like karma, she comes unannouced, in various ways and scales. Karma will never achieve her punishments without a consent of the wrongdoer - thus why she always gave people ideas to see if they're wrongdoers.
Yuri, on the other hand, isn't exactly like Nanno. Yuri comes from impulsive, straight forward thoughts about wanting to punish someone. She embodies maybe vengeance, the part of person, where we want to do everything quickly, just so we can see them punished ASAP.

I know that Yuri aspires to be like Nanno, maybe even worse, and I don't necessarily hate the idea of having another punisher. But I dislike the outcome of Yuri as character.
Maybe I liked how Nanno was not even judging people, she knew right away what was going on, saw the opportunity to leading people to their own fate. Yuri doesn't do this. She does things from spite, she likes torture, she wants to see how other people will punish the wrongdoer more, than doing it herself.

In the end, in the last episode, I think that Nanno's planning something in regards of Yuri, that she played opossum, as she did in EP4 [Yuri]. And I really hope, that we get S3 with Nanno still being the "Mother."

The only thing I actually hate, at some point, is thar Yuri gave blood to Junko. In my opinion, Junko is very unnecessary character in this series.
But we will see, don't we.