I liked how all the characters weren't really wholly good or evil but just had their own agendas. It reminded me a bit of how Game of Thrones was in the early seasons before they pussied out and had Tyrion crying about war and Dany turning into Satan. But funnier.
Elle was amazing. I've always liked her in everything I've seen her in but this was her best role by far and even I was surprised at how good she was. And to get a producer credit aged 22 probably doesn't happen very often! Nicholas Hoult was great as Peter too. As much of a monster as he could be he was still likable by the end.
My only real issue would be that I didn't care much about Leo, so the big moment in the finale didn't have as much impact as it could have.
I guess if it's cancelled they can say her revolution was a success at that moment but if it's renewed something can go wrong or she calls it off because her bear tells her to or something.