The only thing that could redeem Zenos or make him sympathetic would be the writers directly apologizing for ressurecting him, building him up, and then doing literally nothing with the character.
The best version of Zenos was the one who died once and for all on that palace roof. I was beyond annoyed when he anticlimactically showed up at the end of EW's nuanced showdown to shout COME FITE ME BRO CHECK OUT MY GAINS.