I'm not sure if his story is over. I think saying it is or it isn't inevitably has personal bias towards the character influencing your opinion. But: he is for all intents and purposes immortal/an Ascian. He has the Echo, survived suicide, can see colors of souls, swap bodies, etc. He consumed the Mothercrystal. A lot of opportunities here to have him come back if that's their plan. I think his character has a LOT of potential and they are setting up something great.

Yes, I like his character a lot, and don't understand why people hate him so much. Seems like people just jump on the bandwagon. I like ""good"" villains like Emet-Selch too but, I love Zenos, especially after his character development in EW that I can see possibly get expanded.

If he doesn't, and he's gone forever, so be it. It's up to the writers, not us. But I have a feeling they want to give him some kind of redemption or further development.