Zenos was one of the few things I liked about EW (despite not liking him in SB or ShB). His crashing in on Endsinger was one of the highlights of the entire, awful experience for me. I also probably would've loved "In from the Cold" had it resulted in more than trolling.

I didn't find him to be sympathetic, so if that was the intent then chalk that up to another writing failure (similar to Hermes). I saw him as more akin to Vegeta in DBZ, which I personally loved. I wanted to say, "I'm constantly facing increasingly tougher challenges. Instead of you going off alone trying to become Super Saiyan in a vain effort to beat me, you should just come along for the ride." :P I know that's not a popular opinion, but I easily would've traded most of the Scions for him. He'd have made things a lot more interesting from my POV!

I did not like the mirror comparison though. Matter of fact, I hated all of the personality that EW tried to impose not only upon the WoL but Azem as well. No, my Azem is not a "chaos gremlin". No, my WoL is not in it because they're a murder hobo. Writers, get your headcanon off my characters.

As for Meteion/Endsinger, I agree she was a terrible 'final encounter'. I was completely unmoved by everything from her falling to her knees at the Elpis flowers to the lame hand holding with the WoL at the end. (Not to mention the forced narrative that the unsundered world wasn't capable of producing an answer to Hermes' question, but that's another rant.) I wonder how much of a translation issue this was too because Meteion seemed to care a lot more about Hermes than he did about her (or really anyone but himself).